TRICEPS BRACHII

Triceps Brachii muscle

Origin of Triceps Brachii

Long head: infraglenoid tubercle of scapula; Lateral head: posterior surface of humerus, superior to radial groove; Medial head: posterior surface of humerus, inferior to radial groove.

Insertion of Triceps Brachii

Proximal end of olecranon process of ulna and fascia of forearm.

Muscle Action/Function of Triceps Brachii

Chief extensor of forearm; long head steadies head of abducted humerus.

Arterial (Blood) Supply of Triceps Brachii

Branches of deep brachial artery.

Triceps Brachii Video

Triceps Brachii Muscle

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