Subscapularis muscle

Subscapularis muscle
Subscapularis muscle (in red). Ribs are shown as semi-transparent.
The subscapularis is difficult to see from the front (labeled middle right)
Details
OriginSubscapular fossa
InsertionLesser tubercle of humerus
ArterySubscapular artery
NerveUpper subscapular nerve, lower subscapular nerve (C5, C6)
ActionsInternally rotates and adducts humerus; stabilizes shoulder
Identifiers
Latinmusculus subscapularis
TA98A04.6.02.012
TA22460
FMA13413
Anatomical terms of muscle

The subscapularis is a large triangular muscle which fills the subscapular fossa and inserts into the lesser tubercle of the humerus and the front of the capsule of the shoulder-joint.