Serratus posterior superior muscle

Serratus posterior superior muscle
Thin film-like object, at center, is serratus posterior superior muscle.
Details
OriginNuchal ligament (or ligamentum nuchae) and the spinous processes of the vertebrae C7 through T3
InsertionThe upper borders of the 2nd through 5th ribs
ArteryIntercostal arteries
Nerve2nd through 5th intercostal nerves
ActionsElevates ribs 2-5
Identifiers
LatinMusculus serratus posterior superior
TA98A04.3.01.011
TA22236
FMA13401
Anatomical terms of muscle

The serratus posterior superior muscle is a thin, quadrilateral muscle. It is situated at the upper back part of the thorax, deep to the rhomboid muscles.

Structure

The serratus posterior superior muscle arises by an aponeurosis from the lower part of the nuchal ligament, from the spinous processes of C7, T1, T2, and sometimes T3, and from the supraspinal ligament. It is inserted, by four fleshy digitations into the upper borders of the second, third, fourth, and fifth ribs past the angle of the rib.

Function

The serratus posterior superior muscle elevates the second to fifth ribs.[citation needed] This aids deep respiration.[citation needed]

Additional images

See also


This page was last updated at 2024-01-19 22:30 UTC. Update now. View original page.

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