by Bethany | Mar 14, 2012 | Anatomy, David Lauterstein
by David Lauterstein Origin: sacrum, iliac crest, L5-T7, R 10-12, inferior angle of scapula, Insertion: Intertubercular grove of humerus, Action: Extension,medial rotation of humerus, adduction of humerus, depression of shoulder girdle, lower fibers depress ribcage,...