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Serratus anterior muscle

Serratus anterior muscle

Muscle infobox
Name = Serratus anterior |(boxer musscle) Latin = musculus serratus anterior
GraySubject = 122
GrayPage = 438


Caption = Serratus anterior


Caption2 = The left side of the thorax.
Origin = fleshy slips from the outer surface of upper 8 or 9

ribs
Insertion = costal aspect of medial margin of the scapula
Blood = lateral thoracic artery (upper part), thoracodorsal artery (lower part)
Nerve = long thoracic nerve (from roots of brachial plexus C5, 6, 7)
Action = protracts and stabilizes scapula, assists in upward rotation.
Antagonist = Rhomboid major, Rhomboid minor, Trapezius
MeshName =
MeshNumber =
DorlandsPre = m_22
DorlandsSuf = 12550741
The serratus anterior is a muscle that originates on the surface of the upper eight ribs at the side of the chest and inserts along the entire anterior length of the medial border of the scapula.

Function

The serratus anterior is occasionally called the "boxer's muscle" because it is largely responsible for the protraction of the scapula—that is, the pulling of the scapula forward and around the rib cage that occurs when someone throws a punch. The serratus anterior also helps to stabilize the scapula. In addition, it assists in rotating the scapula (glenoid fossa) upward.

Innervation

The serratus anterior is innervated by the long thoracic nerve, a branch of the brachial plexus. The long thoracic nerve travels inferiorly on the surface of the serratus. The nerve is especially vulnerable during certain types of surgery (for example, during lymph node clearance from the axilla). See winged scapula for more details.

ee also

* Serratus posterior inferior muscle
* Serratus posterior superior muscle

External links

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* - "Superficial muscles of the anterior chest wall."
* - "Schematic illustration of a transverse section through the axilla."
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Look at other dictionaries:

  • serratus anterior muscle — musculus serratus anterior …   Medical dictionary

  • serratus anterior — noun muscles that rotate the scapula and elevate the rib cage • Syn: ↑anterior serratus muscle, ↑musculus serratus anterior, ↑serratus magnus • Hypernyms: ↑serratus, ↑serratus muscles …   Useful english dictionary

  • Serratus posterior inferior muscle — Muscle infobox Name = Serratus posterior inferior muscle Latin = GraySubject = 117 GrayPage = 404 Caption = Muscles connecting the upper extremity to the vertebral column. (Serratus posterior inferior labeled at center right.) Origin = vertebrae… …   Wikipedia

  • Serratus posterior superior muscle — Muscle infobox Name = Serratus posterior superior muscle Latin = musculus serratus posterior superior GraySubject = 117 GrayPage = 404 Caption = Origin = nuchal ligament (or ligamentum nuchae) and the spinous processes of the vertebrae C7 through …   Wikipedia

  • Serratus — means a muscle in the trunk (thorax). [cite web|title=serratus definition of serratus by the Free Online dictionary|url=http://www.thefreedictionary.com/serratus] ee also*Serratus anterior muscle *Serratus posterior superior muscle *Serratus… …   Wikipedia

  • musculus serratus anterior — noun muscles that rotate the scapula and elevate the rib cage • Syn: ↑anterior serratus muscle, ↑serratus anterior, ↑serratus magnus • Hypernyms: ↑serratus, ↑serratus muscles …   Useful english dictionary

  • muscle system, human — Introduction   the muscles of the human body that work the skeletal system (skeletal system, human), that are under voluntary control, and that are concerned with movement, posture, and balance. Broadly considered, human muscle like the muscles… …   Universalium

  • Muscle — is the tissue of the body which primarily functions as a source of power. There are three types of muscle in the body. Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart… …   Medical dictionary

  • musculus serratus anterior — [TA] anterior serratus muscle: origin, eight or nine upper ribs; insertion, medial border of scapula; innervation, long thoracic; action, draws scapula forward; rotates scapula to raise shoulder in abduction of arm …   Medical dictionary

  • Muscle — For other uses of Muscle , see Muscle (disambiguation). A top down view of skeletal muscle Muscle (from Latin …   Wikipedia