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Nervous system, the Glossary

Index Nervous system

In biology, the nervous system is the highly complex part of an animal that coordinates its actions and sensory information by transmitting signals to and from different parts of its body.[1]

Table of Contents

  1. 243 relations: Abdomen, Acetylcholine, Action potential, African elephant, Alan Hodgkin, ALS, Amacrine cell, Andrew Huxley, Animal, Antenna (biology), Arthropod, Arthropod mouthparts, Attractor, Autonomic nervous system, Axon, Axon guidance, Axon terminal, Étienne Geoffroy Saint-Hilaire, Basal ganglia, Behavior, Behaviorism, Bilateria, Biology, Blood–brain barrier, Bone morphogenetic protein, Bone morphogenetic protein 4, Brain, Brainstem, Caenorhabditis elegans, Carpal tunnel syndrome, Cell migration, Cell signaling, Cellular differentiation, Central nervous system, Central pattern generator, Cerebellum, Cerebral cortex, Chaos theory, Charles Scott Sherrington, Chemical synapse, Chordin, Circadian rhythm, Circulatory system, Circumesophageal nerve ring, Cnidaria, Command neuron, Common coding theory, Complex system, Composition of the protocerebrum, Compound eye, ... Expand index (193 more) »

Abdomen

The abdomen (colloquially called the belly, tummy, midriff, tucky or stomach) is the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates.

See Nervous system and Abdomen

Acetylcholine

Acetylcholine (ACh) is an organic compound that functions in the brain and body of many types of animals (including humans) as a neurotransmitter.

See Nervous system and Acetylcholine

Action potential

An action potential occurs when the membrane potential of a specific cell rapidly rises and falls.

See Nervous system and Action potential

African elephant

African elephants are members of the genus Loxodonta comprising two living elephant species, the African bush elephant (L. africana) and the smaller African forest elephant (L. cyclotis).

See Nervous system and African elephant

Alan Hodgkin

Sir Alan Lloyd Hodgkin (5 February 1914 – 20 December 1998) was an English physiologist and biophysicist who shared the 1963 Nobel Prize in Physiology or Medicine with Andrew Huxley and John Eccles.

See Nervous system and Alan Hodgkin

ALS

Amyotrophic lateral sclerosis (ALS), also known as motor neurone disease (MND) or Lou Gehrig's disease in the United States, is a rare, terminal neurodegenerative disorder that results in the progressive loss of both upper and lower motor neurons that normally control voluntary muscle contraction.

See Nervous system and ALS

Amacrine cell

In the anatomy of the eye, amacrine cells are interneurons in the retina.

See Nervous system and Amacrine cell

Andrew Huxley

Sir Andrew Fielding Huxley (22 November 191730 May 2012) was an English physiologist and biophysicist.

See Nervous system and Andrew Huxley

Animal

Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia.

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Antenna (biology)

Antennae (antenna), sometimes referred to as "feelers", are paired appendages used for sensing in arthropods.

See Nervous system and Antenna (biology)

Arthropod

Arthropods are invertebrates in the phylum Arthropoda.

See Nervous system and Arthropod

Arthropod mouthparts

The mouthparts of arthropods have evolved into a number of forms, each adapted to a different style or mode of feeding.

See Nervous system and Arthropod mouthparts

Attractor

In the mathematical field of dynamical systems, an attractor is a set of states toward which a system tends to evolve, for a wide variety of starting conditions of the system.

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Autonomic nervous system

The autonomic nervous system (ANS), sometimes called the visceral nervous system and formerly the vegetative nervous system, is a division of the nervous system that operates internal organs, smooth muscle and glands.

See Nervous system and Autonomic nervous system

Axon

An axon (from Greek ἄξων áxōn, axis) or nerve fiber (or nerve fibre: see spelling differences) is a long, slender projection of a nerve cell, or neuron, in vertebrates, that typically conducts electrical impulses known as action potentials away from the nerve cell body.

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Axon guidance

Axon guidance (also called axon pathfinding) is a subfield of neural development concerning the process by which neurons send out axons to reach their correct targets.

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Axon terminal

Axon terminals (also called synaptic boutons, or presynaptic terminals) are distal terminations of the branches of an axon.

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Étienne Geoffroy Saint-Hilaire

Étienne Geoffroy Saint-Hilaire (15 April 177219 June 1844) was a French naturalist who established the principle of "unity of composition".

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Basal ganglia

The basal ganglia (BG) or basal nuclei are a group of subcortical nuclei found in the brains of vertebrates.

See Nervous system and Basal ganglia

Behavior

Behavior (American English) or behaviour (British English) is the range of actions and mannerisms made by individuals, organisms, systems or artificial entities in some environment.

See Nervous system and Behavior

Behaviorism

Behaviorism (also spelled behaviourism) is a systematic approach to understand the behavior of humans and other animals.

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Bilateria

Bilateria is a large clade or infrakingdom of animals called bilaterians, characterized by bilateral symmetry (i.e. having a left and a right side that are mirror images of each other) during embryonic development.

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Biology

Biology is the scientific study of life.

See Nervous system and Biology

Blood–brain barrier

The blood–brain barrier (BBB) is a highly selective semipermeable border of endothelial cells that regulates the transfer of solutes and chemicals between the circulatory system and the central nervous system, thus protecting the brain from harmful or unwanted substances in the blood.

See Nervous system and Blood–brain barrier

Bone morphogenetic protein

Bone morphogenetic proteins (BMPs) are a group of growth factors also known as cytokines and as metabologens.

See Nervous system and Bone morphogenetic protein

Bone morphogenetic protein 4

Bone morphogenetic protein 4 is a protein that in humans is encoded by BMP4 gene.

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Brain

The brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals.

See Nervous system and Brain

Brainstem

The brainstem (or brain stem) is the stalk-like part of the brain that connects the forebrain (the cerebrum and diencephalon) with the spinal cord.

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Caenorhabditis elegans

Caenorhabditis elegans is a free-living transparent nematode about 1 mm in length that lives in temperate soil environments.

See Nervous system and Caenorhabditis elegans

Carpal tunnel syndrome

Carpal tunnel syndrome (CTS) is a nerve compression syndrome associated with the collected signs and symptoms of compression of the median nerve at the carpal tunnel in the wrist.

See Nervous system and Carpal tunnel syndrome

Cell migration

Cell migration is a central process in the development and maintenance of multicellular organisms.

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Cell signaling

In biology, cell signaling (cell signalling in British English) is the process by which a cell interacts with itself, other cells, and the environment.

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Cellular differentiation

Cellular differentiation is the process in which a stem cell changes from one type to a differentiated one.

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Central nervous system

The central nervous system (CNS) is the part of the nervous system consisting primarily of the brain and spinal cord.

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Central pattern generator

Central pattern generators (CPGs) are self-organizing biological neural circuits that produce rhythmic outputs in the absence of rhythmic input.

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Cerebellum

The cerebellum (cerebella or cerebellums; Latin for "little brain") is a major feature of the hindbrain of all vertebrates.

See Nervous system and Cerebellum

Cerebral cortex

The cerebral cortex, also known as the cerebral mantle, is the outer layer of neural tissue of the cerebrum of the brain in humans and other mammals.

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Chaos theory

Chaos theory is an interdisciplinary area of scientific study and branch of mathematics.

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Charles Scott Sherrington

Sir Charles Scott Sherrington (27 November 1857 – 4 March 1952) was a British neurophysiologist.

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Chemical synapse

Chemical synapses are biological junctions through which neurons' signals can be sent to each other and to non-neuronal cells such as those in muscles or glands.

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Chordin

Chordin (from Greek χορδή, string, catgut) is a protein with a prominent role in dorsal–ventral patterning during early embryonic development.

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Circadian rhythm

A circadian rhythm, or circadian cycle, is a natural oscillation that repeats roughly every 24 hours.

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Circulatory system

The circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the entire body of a human or other vertebrate.

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Circumesophageal nerve ring

A circumesophageal or circumpharyngeal nerve ring is an arrangement of nerve ganglia around the esophagus/ pharynx of an animal.

See Nervous system and Circumesophageal nerve ring

Cnidaria

Cnidaria is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in fresh water and marine environments (predominantly the latter), including jellyfish, hydroids, sea anemones, corals and some of the smallest marine parasites.

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Command neuron

A command neuron is an interneuron whose excitation is both necessary and sufficient to evoke a behavior.

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Common coding theory

Common coding theory is a cognitive psychology theory describing how perceptual representations (e.g. of things we can see and hear) and motor representations (e.g. of hand actions) are linked.

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Complex system

A complex system is a system composed of many components which may interact with each other.

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Composition of the protocerebrum

The protocerebrum is the first segment of the panarthropod brain.

See Nervous system and Composition of the protocerebrum

Compound eye

A compound eye is a visual organ found in arthropods such as insects and crustaceans.

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Connectome

A connectome is a comprehensive map of neural connections in the brain, and may be thought of as its "wiring diagram".

See Nervous system and Connectome

Coordinate system

In geometry, a coordinate system is a system that uses one or more numbers, or coordinates, to uniquely determine the position of the points or other geometric elements on a manifold such as Euclidean space.

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Coral

Corals are colonial marine invertebrates within the class Anthozoa of the phylum Cnidaria.

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Cranial cavity

The cranial cavity, also known as intracranial space, is the space within the skull that accommodates the brain.

See Nervous system and Cranial cavity

Cranial nerves

Cranial nerves are the nerves that emerge directly from the brain (including the brainstem), of which there are conventionally considered twelve pairs.

See Nervous system and Cranial nerves

Crustacean

Crustaceans are a group of arthropods that are a part of the subphylum Crustacea, a large, diverse group of mainly aquatic arthropods including decapods (shrimps, prawns, crabs, lobsters and crayfish), seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, opossum shrimps, amphipods and mantis shrimp.

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Ctenophora

Ctenophora (ctenophore) comprise a phylum of marine invertebrates, commonly known as comb jellies, that inhabit sea waters worldwide.

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Dale's principle

In neuroscience, Dale's principle (or Dale's law) is a rule attributed to the English neuroscientist Henry Hallett Dale.

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David H. Hubel

David Hunter Hubel (February 27, 1926 – September 22, 2013) was an American Canadian neurophysiologist noted for his studies of the structure and function of the visual cortex.

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Decision-making

In psychology, decision-making (also spelled decision making and decisionmaking) is regarded as the cognitive process resulting in the selection of a belief or a course of action among several possible alternative options.

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Depolarization

In biology, depolarization or hypopolarization is a change within a cell, during which the cell undergoes a shift in electric charge distribution, resulting in less negative charge inside the cell compared to the outside.

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Deuterostome

Deuterostomes (from Greek) are bilaterian animals of the superphylum Deuterostomia, typically characterized by their anus forming before the mouth during embryonic development.

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Development of the nervous system

The development of the nervous system, or neural development (neurodevelopment), refers to the processes that generate, shape, and reshape the nervous system of animals, from the earliest stages of embryonic development to adulthood.

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Diabetes

Diabetes mellitus, often known simply as diabetes, is a group of common endocrine diseases characterized by sustained high blood sugar levels.

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Diabetic neuropathy

Diabetic neuropathy is various types of nerve damage associated with diabetes mellitus.

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Dopamine

Dopamine (DA, a contraction of 3,4-dihydroxyphenethylamine) is a neuromodulatory molecule that plays several important roles in cells.

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Dorsal root ganglion

A dorsal root ganglion (or spinal ganglion; also known as a posterior root ganglion) is a cluster of neurons (a ganglion) in a dorsal root of a spinal nerve.

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Drosophila

Drosophila is a genus of fly, belonging to the family Drosophilidae, whose members are often called "small fruit flies" or pomace flies, vinegar flies, or wine flies, a reference to the characteristic of many species to linger around overripe or rotting fruit.

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Dura mater

In neuroanatomy, dura mater is a thick membrane made of dense irregular connective tissue that surrounds the brain and spinal cord.

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Earthworm

An earthworm is a soil-dwelling terrestrial invertebrate that belongs to the phylum Annelida.

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Echinoderm

An echinoderm is any deuterostomal animal of the phylum Echinodermata, which includes starfish, brittle stars, sea urchins, sand dollars and sea cucumbers, as well as the sessile sea lilies or "stone lilies".

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Ectoderm

The ectoderm is one of the three primary germ layers formed in early embryonic development.

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Ediacaran

The Ediacaran is a geological period of the Neoproterozoic Era that spans 96 million years from the end of the Cryogenian Period at 635 Mya to the beginning of the Cambrian Period at 538.8 Mya.

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Ediacaran biota

The Ediacaran (formerly Vendian) biota is a taxonomic period classification that consists of all life forms that were present on Earth during the Ediacaran Period.

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Electrical synapse

An electrical synapse is a mechanical and electrically conductive synapse, a functional junction between two neighboring neurons.

See Nervous system and Electrical synapse

Electrophysiology

Electrophysiology (from Greek ἥλεκτ, ēlektron, "amber"; φύσις, physis, "nature, origin"; and -λογία, -logia) is the branch of physiology that studies the electrical properties of biological cells and tissues.

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Endocrine system

The endocrine system is a messenger system in an organism comprising feedback loops of hormones that are released by internal glands directly into the circulatory system and that target and regulate distant organs.

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Endoderm

Endoderm is the innermost of the three primary germ layers in the very early embryo.

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Enteric nervous system

The enteric nervous system (ENS) or intrinsic nervous system is one of the three main divisions of the autonomic nervous system (ANS), the other being the sympathetic (SNS) and parasympathetic nervous system (PSNS), and consists of a mesh-like system of neurons that governs the function of the gastrointestinal tract.

See Nervous system and Enteric nervous system

Eric Kandel

Eric Richard Kandel (born Erich Richard Kandel, November 7, 1929) is an Austrian-born American medical doctor who specialized in psychiatry, a neuroscientist and a professor of biochemistry and biophysics at the College of Physicians and Surgeons at Columbia University.

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Fate mapping

Fate mapping is a method used in developmental biology to study the embryonic origin of various adult tissues and structures.

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Feature detection (nervous system)

Feature detection is a process by which the nervous system sorts or filters complex natural stimuli in order to extract behaviorally relevant cues that have a high probability of being associated with important objects or organisms in their environment, as opposed to irrelevant background or noise.

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Fibroblast growth factor

Fibroblast growth factors (FGF) are a family of cell signalling proteins produced by macrophages; they are involved in a wide variety of processes, most notably as crucial elements for normal development in animal cells.

See Nervous system and Fibroblast growth factor

Fly

Flies are insects of the order Diptera, the name being derived from the Greek δι- di- "two", and πτερόν pteron "wing".

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GABA

GABA (gamma Aminobutyric acid, γ-Aminobutyric acid) is the chief inhibitory neurotransmitter in the developmentally mature mammalian central nervous system.

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Ganglion

A ganglion (ganglia) is a group of neuron cell bodies in the peripheral nervous system.

See Nervous system and Ganglion

Gastrointestinal tract

The gastrointestinal tract (GI tract, digestive tract, alimentary canal) is the tract or passageway of the digestive system that leads from the mouth to the anus. The GI tract contains all the major organs of the digestive system, in humans and other animals, including the esophagus, stomach, and intestines.

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Gastrulation

Gastrulation is the stage in the early embryonic development of most animals, during which the blastula (a single-layered hollow sphere of cells), or in mammals the blastocyst, is reorganized into a two-layered or three-layered embryo known as the gastrula.

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Glia

Glia, also called glial cells (gliocytes) or neuroglia, are non-neuronal cells in the central nervous system (brain and spinal cord) and the peripheral nervous system that do not produce electrical impulses.

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Glutamic acid

Glutamic acid (symbol Glu or E; the anionic form is known as glutamate) is an α-amino acid that is used by almost all living beings in the biosynthesis of proteins.

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Gray's Anatomy

Gray's Anatomy is a reference book of human anatomy written by Henry Gray, illustrated by Henry Vandyke Carter and first published in London in 1858.

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Grey matter

Grey matter, or brain matter in American English, is a major component of the central nervous system, consisting of neuronal cell bodies, neuropil (dendrites and unmyelinated axons), glial cells (astrocytes and oligodendrocytes), synapses, and capillaries.

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Growth cone

A growth cone is a large actin-supported extension of a developing or regenerating neurite seeking its synaptic target.

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Guillain–Barré syndrome

Guillain–Barré syndrome (GBS) is a rapid-onset muscle weakness caused by the immune system damaging the peripheral nervous system.

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Hemichordate

Hemichordata is a phylum which consists of triploblastic, enterocoelomate, and bilaterally symmetrical marine deuterostome animals, generally considered the sister group of the echinoderms.

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Henry Hallett Dale

Sir Henry Hallett Dale (9 June 1875 – 23 July 1968) was an English pharmacologist and physiologist.

See Nervous system and Henry Hallett Dale

Hermaphrodite

A hermaphrodite is a sexually reproducing organism that produces both male and female gametes.

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Homeostasis

In biology, homeostasis (British also homoeostasis) is the state of steady internal physical and chemical conditions maintained by living systems.

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Homology (biology)

In biology, homology is similarity due to shared ancestry between a pair of structures or genes in different taxa.

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Hormone

A hormone (from the Greek participle ὁρμῶν, "setting in motion") is a class of signaling molecules in multicellular organisms that are sent to distant organs or tissues by complex biological processes to regulate physiology and behavior.

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Human brain

The brain is the central organ of the human nervous system, and with the spinal cord makes up the central nervous system.

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Human digestive system

The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion (the tongue, salivary glands, pancreas, liver, and gallbladder).

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Hydra (genus)

Hydra is a genus of small freshwater hydrozoans of the phylum Cnidaria.

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Hyperpolarization (biology)

Hyperpolarization is a change in a cell's membrane potential that makes it more negative.

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Idiopathic disease

An idiopathic disease is any disease with an unknown cause or mechanism of apparent spontaneous origin.

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Insect

Insects (from Latin insectum) are hexapod invertebrates of the class Insecta.

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Interneuron

Interneurons (also called internuncial neurons, relay neurons, association neurons, connector neurons, intermediate neurons or local circuit neurons) are neurons that connect to brain regions, i.e. not direct motor neurons or sensory neurons.

See Nervous system and Interneuron

Jellyfish

Jellyfish, also known as sea jellies, are the medusa-phase of certain gelatinous members of the subphylum Medusozoa, which is a major part of the phylum Cnidaria.

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John Eccles (neurophysiologist)

Sir John Carew Eccles (27 January 1903 – 2 May 1997) was an Australian neurophysiologist and philosopher who won the 1963 Nobel Prize in Physiology or Medicine for his work on the synapse.

See Nervous system and John Eccles (neurophysiologist)

Language

Language is a structured system of communication that consists of grammar and vocabulary.

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Large-scale brain network

Large-scale brain networks (also known as intrinsic brain networks) are collections of widespread brain regions showing functional connectivity by statistical analysis of the fMRI BOLD signal or other recording methods such as EEG, PET and MEG.

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Leprosy

Leprosy, also known as Hansen's disease (HD), is a long-term infection by the bacteria Mycobacterium leprae or Mycobacterium lepromatosis.

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Lidocaine

Lidocaine, also known as lignocaine and sold under the brand name Xylocaine among others, is a local anesthetic of the amino amide type.

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Ligand-gated ion channel

Ligand-gated ion channels (LICs, LGIC), also commonly referred to as ionotropic receptors, are a group of transmembrane ion-channel proteins which open to allow ions such as Na+, K+, Ca2+, and/or Cl− to pass through the membrane in response to the binding of a chemical messenger (i.e. a ligand), such as a neurotransmitter.

See Nervous system and Ligand-gated ion channel

Local anesthetic

A local anesthetic (LA) is a medication that causes absence of all sensation (including pain) in a specific body part without loss of consciousness, providing local anesthesia, as opposed to a general anesthetic, which eliminates all sensation in the entire body and causes unconsciousness.

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Long-term potentiation

In neuroscience, long-term potentiation (LTP) is a persistent strengthening of synapses based on recent patterns of activity.

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Lupus erythematosus

Lupus erythematosus is a collection of autoimmune diseases in which the human immune system becomes hyperactive and attacks healthy tissues.

See Nervous system and Lupus erythematosus

Mauthner cell

The Mauthner cells are a pair of big and easily identifiable neurons (one for each half of the body) located in the rhombomere 4 of the hindbrain in fish and amphibians that are responsible for a very fast escape reflex (in the majority of animals – a so-called C-start response).

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Memory

Memory is the faculty of the mind by which data or information is encoded, stored, and retrieved when needed.

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Meninges

In anatomy, the meninges (meninx) are the three membranes that envelop the brain and spinal cord.

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Mesoderm

The mesoderm is the middle layer of the three germ layers that develops during gastrulation in the very early development of the embryo of most animals.

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Mesozoa

The Mesozoa are minuscule, worm-like parasites of marine invertebrates.

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Mirror neuron

A mirror neuron is a neuron that fires both when an animal acts and when the animal observes the same action performed by another.

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Mollusca

Mollusca is the second-largest phylum of invertebrate animals, after Arthropoda; members are known as molluscs or mollusks.

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Motor nerve

A motor nerve, or efferent nerve, is a nerve that contains exclusively efferent nerve fibers and transmits motor signals from the central nervous system (CNS) to the muscles of the body.

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Motor planning

In psychology and neuroscience, motor planning is a set of processes related to the preparation of a movement that occurs during the reaction time (the time between the presentation of a stimulus to a person and that person's initiation of a motor response).

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Multicellular organism

A multicellular organism is an organism that consists of more than one cell, unlike unicellular organisms.

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Multiple sclerosis

Multiple sclerosis (MS) is an autoimmune disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged.

See Nervous system and Multiple sclerosis

Muscle

Muscle is a soft tissue, one of the four basic types of animal tissue.

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Muscle cell

A muscle cell, also known as a myocyte, is a mature contractile cell in the muscle of an animal.

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Muscular system

The muscular system is an organ system consisting of skeletal, smooth, and cardiac muscle.

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Myelin

Myelin is a lipid-rich material that surrounds nerve cell axons (the nervous system's electrical wires) to insulate them and increase the rate at which electrical impulses (called action potentials) pass along the axon.

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Nematode

The nematodes (or; Νηματώδη; Nematoda), roundworms or eelworms constitute the phylum Nematoda.

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Nerve

A nerve is an enclosed, cable-like bundle of nerve fibers (called axons) in the peripheral nervous system.

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Nerve fascicle

A nerve fascicle is a bundle of nerve fibers belonging to a nerve in the peripheral nervous system.

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Nerve net

A nerve net consists of interconnected neurons lacking a brain or any form of cephalization.

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Nervous tissue

Nervous tissue, also called neural tissue, is the main tissue component of the nervous system.

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Neural circuit

A neural circuit is a population of neurons interconnected by synapses to carry out a specific function when activated.

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Neural crest

Neural crest cells are a temporary group of cells that arise from the embryonic ectoderm germ layer, and in turn give rise to a diverse cell lineage—including melanocytes, craniofacial cartilage and bone, smooth muscle, peripheral and enteric neurons and glia.

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Neural groove

The neural groove is a shallow median groove of the neural plate between the neural folds of an embryo.

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Neural network (biology)

A neural network, also called a neuronal network, is an interconnected population of neurons (typically containing multiple neural circuits).

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Neural network (machine learning)

In machine learning, a neural network (also artificial neural network or neural net, abbreviated ANN or NN) is a model inspired by the structure and function of biological neural networks in animal brains.

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Neural pathway

In neuroanatomy, a neural pathway is the connection formed by axons that project from neurons to make synapses onto neurons in another location, to enable neurotransmission (the sending of a signal from one region of the nervous system to another).

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Neural plate

In embryology, the neural plate is a key developmental structure that serves as the basis for the nervous system.

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Neural tube

In the developing chordate (including vertebrates), the neural tube is the embryonic precursor to the central nervous system, which is made up of the brain and spinal cord.

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Neuroblast

In vertebrates, a neuroblast or primitive nerve cell is a postmitotic cell that does not divide further, and which will develop into a neuron after a migration phase.

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Neurogenesis

Neurogenesis is the process by which nervous system cells, the neurons, are produced by neural stem cells (NSCs). This occurs in all species of animals except the porifera (sponges) and placozoans. Types of NSCs include neuroepithelial cells (NECs), radial glial cells (RGCs), basal progenitors (BPs), intermediate neuronal precursors (INPs), subventricular zone astrocytes, and subgranular zone radial astrocytes, among others.

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Neurology

Neurology (from νεῦρον (neûron), "string, nerve" and the suffix -logia, "study of") is the branch of medicine dealing with the diagnosis and treatment of all categories of conditions and disease involving the nervous system, which comprises the brain, the spinal cord and the peripheral nerves.

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Neuromodulation

Neuromodulation is the physiological process by which a given neuron uses one or more chemicals to regulate diverse populations of neurons.

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Neuron

A neuron, neurone, or nerve cell is an excitable cell that fires electric signals called action potentials across a neural network in the nervous system.

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Neuropil

Neuropil (or "neuropile") is any area in the nervous system composed of mostly unmyelinated axons, dendrites and glial cell processes that forms a synaptically dense region containing a relatively low number of cell bodies.

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Neuroplasticity

Neuroplasticity, also known as neural plasticity or brain plasticity, is the ability of neural networks in the brain to change through growth and reorganization.

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Neuroregeneration

Neuroregeneration involves the regrowth or repair of nervous tissues, cells or cell products.

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Neuroscience

Neuroscience is the scientific study of the nervous system (the brain, spinal cord, and peripheral nervous system), its functions and disorders.

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Neurotransmitter

A neurotransmitter is a signaling molecule secreted by a neuron to affect another cell across a synapse.

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Neurotransmitter receptor

A neurotransmitter receptor (also known as a neuroreceptor) is a membrane receptor protein that is activated by a neurotransmitter.

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Neurotrophin

Neurotrophins are a family of proteins that induce the survival, development, and function of neurons.

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Neurovascular unit

The neurovascular unit (NVU) comprises the components of the brain that collectively regulate cerebral blood flow in order to deliver the requisite nutrients to activated neurons.

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Neurulation

Neurulation refers to the folding process in vertebrate embryos, which includes the transformation of the neural plate into the neural tube.

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NMDA receptor

The N-methyl-D-aspartate receptor (also known as the NMDA receptor or NMDAR), is a glutamate receptor and predominantly Ca2+ ion channel found in neurons.

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Noggin (protein)

Noggin, also known as NOG, is a protein that is involved in the development of many body tissues, including nerve tissue, muscles, and bones.

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Nucleus (neuroanatomy)

In neuroanatomy, a nucleus (nuclei) is a cluster of neurons in the central nervous system, located deep within the cerebral hemispheres and brainstem.

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Nutrition

Nutrition is the biochemical and physiological process by which an organism uses food to support its life.

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Oculomotor nucleus

The fibers of the oculomotor nerve arise from a nucleus in the midbrain, which lies in the gray substance of the floor of the cerebral aqueduct and extends in front of the aqueduct for a short distance into the floor of the third ventricle.

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Oligodendrocyte

Oligodendrocytes, also known as oligodendroglia, are a type of neuroglia whose main functions are to provide support and insulation to axons within the central nervous system (CNS) of jawed vertebrates.

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Otto Loewi

Otto Loewi (3 June 1873 – 25 December 1961) was a German-born pharmacologist and psychobiologist who discovered the role of acetylcholine as an endogenous neurotransmitter.

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Paralysis

Paralysis (paralyses; also known as plegia) is a loss of motor function in one or more muscles.

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Parasympathetic nervous system

The parasympathetic nervous system (PSNS) is one of the three divisions of the autonomic nervous system, the others being the sympathetic nervous system and the enteric nervous system.

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Parietal lobe

The parietal lobe is one of the four major lobes of the cerebral cortex in the brain of mammals.

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Pathogen

In biology, a pathogen (πάθος, "suffering", "passion" and -γενής, "producer of"), in the oldest and broadest sense, is any organism or agent that can produce disease.

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Peptide

Peptides are short chains of amino acids linked by peptide bonds.

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Perception

Perception is the organization, identification, and interpretation of sensory information in order to represent and understand the presented information or environment.

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Peripheral nervous system

The peripheral nervous system (PNS) is one of two components that make up the nervous system of bilateral animals, with the other part being the central nervous system (CNS).

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Peripheral neuropathy

Peripheral neuropathy, often shortened to neuropathy, refers to damage or disease affecting the nerves.

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Pheromone

A pheromone is a secreted or excreted chemical factor that triggers a social response in members of the same species.

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Phylum

In biology, a phylum (phyla) is a level of classification or taxonomic rank below kingdom and above class.

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Placozoa

Placozoa ("flat animals") is a phylum of marine and free-living (non-parasitic) animals.

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Polarity in embryogenesis

In developmental biology, an embryo is divided into two hemispheres: the animal pole and the vegetal pole within a blastula.

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Postsynaptic density

The postsynaptic density (PSD) is a protein dense specialization attached to the postsynaptic membrane.

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Premotor cortex

The premotor cortex is an area of the motor cortex lying within the frontal lobe of the brain just anterior to the primary motor cortex.

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Primary somatosensory cortex

In neuroanatomy, the primary somatosensory cortex is located in the postcentral gyrus of the brain's parietal lobe, and is part of the somatosensory system.

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Primate

Primates is an order of mammals, which is further divided into the strepsirrhines, which include lemurs, galagos, and lorisids; and the haplorhines, which include tarsiers; and the simians, which include monkeys and apes.

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Protostome

Protostomia is the clade of animals once thought to be characterized by the formation of the organism's mouth before its anus during embryonic development.

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Psychology

Psychology is the scientific study of mind and behavior.

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Radiata

Radiata or Radiates is a historical taxonomic rank that was used to classify animals with radially symmetric body plans.

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Recall (memory)

Recall in memory refers to the mental process of retrieval of information from the past.

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Reflex

In biology, a reflex, or reflex action, is an involuntary, unplanned sequence or action and nearly instantaneous response to a stimulus.

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Reflex arc

A reflex arc is a neural pathway that controls a reflex.

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Retina

The retina (or retinas) is the innermost, light-sensitive layer of tissue of the eye of most vertebrates and some molluscs.

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Reward system

The reward system (the mesocorticolimbic circuit) is a group of neural structures responsible for incentive salience (i.e., "wanting"; desire or craving for a reward and motivation), associative learning (primarily positive reinforcement and classical conditioning), and positively-valenced emotions, particularly ones involving pleasure as a core component (e.g., joy, euphoria and ecstasy).

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Salivary gland

The salivary glands in many vertebrates including mammals are exocrine glands that produce saliva through a system of ducts.

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Santiago Ramón y Cajal

Santiago Ramón y Cajal (1 May 1852 – 17 October 1934) was a Spanish neuroscientist, pathologist, and histologist specializing in neuroanatomy and the central nervous system.

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Scholarpedia

Scholarpedia is an English-language wiki-based online encyclopedia with features commonly associated with open-access online academic journals, which aims to have quality content in science and medicine.

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Schwann cell

Schwann cells or neurolemmocytes (named after German physiologist Theodor Schwann) are the principal glia of the peripheral nervous system (PNS).

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Sea anemone

Sea anemones are a group of predatory marine invertebrates constituting the order Actiniaria.

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Second messenger system

Second messengers are intracellular signaling molecules released by the cell in response to exposure to extracellular signaling molecules—the first messengers.

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Senescence

Senescence or biological aging is the gradual deterioration of functional characteristics in living organisms.

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Sense

A sense is a biological system used by an organism for sensation, the process of gathering information about the surroundings through the detection of stimuli.

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Sense of smell

The sense of smell, or olfaction, is the special sense through which smells (or odors) are perceived.

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Sensory nerve

A sensory nerve, or afferent nerve, is an anatomic term for a nerve that contains exclusively afferent nerve fibers.

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Sensory nervous system

The sensory nervous system is a part of the nervous system responsible for processing sensory information.

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Sensory neuron

Sensory neurons, also known as afferent neurons, are neurons in the nervous system, that convert a specific type of stimulus, via their receptors, into action potentials or graded receptor potentials.

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Sentience

Sentience is the ability to experience feelings and sensations.

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Series and parallel circuits

Two-terminal components and electrical networks can be connected in series or parallel.

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Sexual dimorphism

Sexual dimorphism is the condition where sexes of the same species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction.

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Shingles

Shingles, also known as herpes zoster, is a viral disease characterized by a painful skin rash with blisters in a localized area.

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Simple eye in invertebrates

A simple eye or ocellus (sometimes called a pigment pit) is a form of eye or an optical arrangement which has a single lens without the sort of elaborate retina that occurs in most vertebrates.

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Skull

The skull is a bone protective cavity for the brain.

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Somatic nervous system

The somatic nervous system (SNS) is made up of nerves that link the brain and spinal cord to voluntary or skeletal muscles that are under conscious control as well as to skin sensory receptors.

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Spinal canal

In human anatomy, the spinal canal, vertebral canal or spinal cavity is an elongated body cavity enclosed within the dorsal bony arches of the vertebral column, which contains the spinal cord, spinal roots and dorsal root ganglia.

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Spinal cord

The spinal cord is a long, thin, tubular structure made up of nervous tissue that extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column (backbone) of vertebrate animals.

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Spinal nerve

A spinal nerve is a mixed nerve, which carries motor, sensory, and autonomic signals between the spinal cord and the body.

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Sponge

Sponges (also known as sea sponges), the members of the phylum Porifera (meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts.

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Squid giant axon

The squid giant axon is the very large (up to 1.5 mm in diameter; typically around 0.5 mm) axon that controls part of the water jet propulsion system in squid.

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Squid giant synapse

The squid giant synapse is a chemical synapse found in squid.

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Stem cell

In multicellular organisms, stem cells are undifferentiated or partially differentiated cells that can change into various types of cells and proliferate indefinitely to produce more of the same stem cell.

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Suboesophageal ganglion

The suboesophageal ganglion (acronym: SOG; synonym: subesophageal ganglion) of arthropods and in particular insects is part of the arthropod central nervous system (CNS).

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Superior colliculus

In neuroanatomy, the superior colliculus is a structure lying on the roof of the mammalian midbrain.

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Supplementary motor area

The supplementary motor area (SMA) is a part of the motor cortex of primates that contributes to the control of movement.

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Suprachiasmatic nucleus

The suprachiasmatic nucleus or nuclei (SCN) is a small region of the brain in the hypothalamus, situated directly above the optic chiasm.

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Supraesophageal ganglion

The supraesophageal ganglion (also "supraoesophageal ganglion", "arthropod brain" or "microbrain") is the first part of the arthropod, especially insect, central nervous system.

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Symmetry in biology

Symmetry in biology refers to the symmetry observed in organisms, including plants, animals, fungi, and bacteria.

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Sympathetic nervous system

The sympathetic nervous system (SNS) is one of the three divisions of the autonomic nervous system, the others being the parasympathetic nervous system and the enteric nervous system.

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Synapse

In the nervous system, a synapse is a structure that permits a neuron (or nerve cell) to pass an electrical or chemical signal to another neuron or to the target effector cell.

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Synaptic plasticity

In neuroscience, synaptic plasticity is the ability of synapses to strengthen or weaken over time, in response to increases or decreases in their activity.

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Synaptic vesicle

In a neuron, synaptic vesicles (or neurotransmitter vesicles) store various neurotransmitters that are released at the synapse.

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Thalamus

The thalamus (thalami; from Greek θάλαμος, "chamber") is a large mass of gray matter on the lateral walls of the third ventricle forming the dorsal part of the diencephalon (a division of the forebrain).

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Theory of mind

In psychology, theory of mind refers to the capacity to understand other people by ascribing mental states to them.

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Torsten Wiesel

Torsten Nils Wiesel (born 3 June 1924) is a Swedish neurophysiologist.

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Transcription (biology)

Transcription is the process of copying a segment of DNA into RNA.

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Transverse plane

The transverse plane (also known as the horizontal plane, axial plane and transaxial plane) is an anatomical plane that divides the body into superior and inferior sections.

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Turing machine

A Turing machine is a mathematical model of computation describing an abstract machine that manipulates symbols on a strip of tape according to a table of rules.

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Ulnar nerve

The ulnar nerve is a nerve that runs near the ulna, one of the two long bones in the forearm.

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Ventral nerve cord

The ventral nerve cord is a major structure of the invertebrate central nervous system.

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Vertebra

Each vertebra (vertebrae) is an irregular bone with a complex structure composed of bone and some hyaline cartilage, that make up the vertebral column or spine, of vertebrates.

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Vertebral column

The vertebral column, also known as the spinal column, spine or backbone, is the core part of the axial skeleton in vertebrate animals.

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Vertebrate

Vertebrates are deuterostomal animals with bony or cartilaginous axial endoskeleton — known as the vertebral column, spine or backbone — around and along the spinal cord, including all fish, amphibians, reptiles, birds and mammals.

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Visual system

The visual system is the physiological basis of visual perception (the ability to detect and process light).

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Walter Pitts

Walter Harry Pitts, Jr. (23 April 1923 – 14 May 1969) was an American logician who worked in the field of computational neuroscience.

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Warren Sturgis McCulloch

Warren Sturgis McCulloch (November 16, 1898 – September 24, 1969) was an American neurophysiologist and cybernetician, known for his work on the foundation for certain brain theories and his contribution to the cybernetics movement.

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White matter

White matter refers to areas of the central nervous system (CNS) that are mainly made up of myelinated axons, also called tracts.

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Worm

Worms are many different distantly related bilateral animals that typically have a long cylindrical tube-like body, no limbs, and usually no eyes.

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Xenoturbella

Xenoturbella is a genus of very simple bilaterians up to a few centimeters long.

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References

[1] https://en.wikipedia.org/wiki/Nervous_system

Also known as Comparative anatomy of the nervous system, Evolutionary origin of nervous systems, Human Nervous System, NS structure, Nerve system, Nervous system (vertebrate), Nervous systems, Nervousystem, Neural, Neural system, Neurally mediated, Neuric, Neurogenic, Neurosystem, Systema nervorum, Systema nervosum.

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