Triceps Anatomy - Cadaver Dissection

Video Description

TRICEPS:
Go to 5m 10s.

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

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

INNERVATION
Radial nerve (C6, C7 and C8) (C6, C7, C8)
Arterial Supply Branches of deep brachial artery.