Triceps Brachii

Tendons

Origin:

LONG HEAD from infraglenoid tuberosity of the Scapula

LATERAL HEAD from posterior and lateral surface of the Humerus

MEDIAL HEAD from lower posterior surface of the Humerus

Insertion: Upper posterior surface of the olecranon and the deep forearm fascia 

Function: Extends the elbow along with other muscles which extend the elbow If the arm is abducted, the long head adducts the shoulder along with other Muscles which produce shoulder Adduction

Nerve: Radial Nerve

Reflex: C7 
Artery: Muscular branches of Profunda Brachii

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