Subscapularis muscle

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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
Origin	Subscapular fossa
Insertion	Lesser tubercle of humerus
Artery	Subscapular artery
Nerve	Upper subscapular nerve, lower subscapular nerve (C5, C6)
Actions	Internally rotates and adducts humerus; stabilizes shoulder
Identifiers
Latin	musculus subscapularis
TA98	A04.6.02.012
TA2	2460
FMA	13413
Anatomical terms of muscle [edit on Wikidata]

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.