external capsule: Definition and Much More from Answers.com
The external capsule is a series of white matter fiber tracts in the brain. These fibers run between the most lateral (toward the side of the head) segment of the lentiform nucleus and the claustrum.
Brain: telencephalon (cerebrum,
cerebral cortex, cerebral
hemispheres)
Primary sulci/fissures
Medial
longitudinal, Lateral, Central,
Parietoöccipital, Calcarine,
Cingulate, Callosal Collateral fissure
Frontal lobe
Precentral gyrus (Primary motor cortex,
4), Precentral sulcus, Superior frontal gyrus/Frontal eye fields
(6, 8, 9), Middle frontal gyrus (46), Inferior frontal gyrus (44-Pars opercularis, 45-Pars triangularis), Orbitofrontal cortex (10, 11, 12, 47)
Parietal lobe
Somatosensory cortex (Primary (1, 2, 3, 43), Secondary (5)), Precuneus
(7m), Parietal lobules (Superior
(7l), Inferior (40)), Angular gyrus (39), Intraparietal sulcus, Marginal sulcus
Occipital lobe
Primary
visual cortex (17), Cuneus, Lingual gyrus,
18, 19 - Lateral occipital sulcus
Temporal lobe
Primary auditory
cortex (41, 42),
Superior temporal gyrus (38,
22), Middle temporal gyrus
(21), Inferior temporal gyrus
(20), Fusiform gyrus (37) Medial temporal lobe (Amygdala, Hippocampus, Parahippocampal gyrus (27, 28, 34, 35,
36)
Cingulate cortex/gyrus
Subgenual
area (25), anterior cingulate
(24, 32, 33), Posterior cingulate (23, 31), Retrosplenial
cortex (26, 29, 30), Supracallosal gyrus
white matter tracts
Corpus callosum
(Splenium, Genu, Rostrum, Tapetum), Septum pellucidum, Ependyma, Internal capsule, Corona radiata, External capsule, Olfactory tract, Fornix (Commissure of fornix), Anterior commissure, Posterior commissure
Terminal stria
Basal ganglia
Striatum
(Putamen,Caudate nucleus, Nucleus accumbens), Globus pallidus, Claustrum, Subthalamic nucleus, Substantia nigra
Other
Insular cortex
Olfactory bulb, Anterior olfactory
nucleus Septal nuclei Basal optic
nucleus of Meynert
Some categorizations are approximations,
and some Brodmann areas span gyri.