Muscle Origin

Coracoid process of scapula to middle, medial humerus/opposite deltoid tuberosity.

Coracoid process of scapula is a long curved projection from the neck of the scapula, overhanging the glenoid cavity and giving attachment to the short head of the biceps, the coracobrachial muscle, the smaller pectoral muscle, and the coracoacromial ligament.


Medial humerus.

Attaches approximately half way down the medial aspect of the humerus.


Adducts arm at shoulder.anatomy-model-muscles-shoulder-711-edited

Adducts humerus, flexes the arm at glenohumeral joint.

Innervation – Nerve control

Musculocutaneous nerve.

It is perforated by and innervated by the musculocutaneous nerve, which arises from the anterior division of the upper (C5, C6) & middle trunks (C7) of the brachial plexus. Wiki


Brachial artery.

The brachial artery is the major blood vessel of the (upper) arm. It is closely related to the median nerve; in proximal regions, the median nerve is immediately lateral to the brachial artery. Distally, the median nerve crosses the medial side of the brachial artery and lies anterior to the elbow joint. Wiki

Antagonist muscles

Posterior Deltoid, Triceps Brachii (long head), Latissimus Dorsi, Teres Major. Pictures of muscles

Trigger Point Referrals


Stretching description








Additional Resources
American Academy of Manual Medicine
The American Heritage┬« Stedman’s Medical Dictionary

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