Supraspinatus - Musculus supraspinatus

Description

Origin: Supraspinous fossa ofscapula

Insertion: Superior facet of greater tubercle ofhumerus

Artery: Suprascapular artery

Nerve: Suprascapular nerve

Action: Abduction of arm and stabilizes humerus

Antagonist: Infraspinatus, teres minor, pectoralis major, andlatissimus dorsi

Description:
The Supraspinatus occupies the whole of the supraspinatous fossa, arisingfrom its medial two-thirds, and from the strong supraspinatous fascia. The muscular fibers converge to a tendon, which crosses the upper part of the shoulder-joint, and is insertedinto the highest of the three impressions on the greater tubercle of the humerus; the tendon is intimately adherent to the capsule of the shoulder-joint.


This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).

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