The Triceps Brachii also assists Latissimus Dorsi in extending the shoulder joint. It contracts strongly during the up phase of a push up, to straighten the arm.
Origin : Long head - Lower part of the glenoid cavity of the scapula.
Lateral head - Upper half of the posterior surface of the humerus.
Medial head - Lower 2/3 of the posterior surface of the humerus
Insertion : Olecranon process of the ulna
Actions : Elbow extension
Innervation : Radial nerve
Daily uses : Pushing a door closed
Example strengthening exercises : Tricep extension.
Overhead tricep extension.
Example stretches : Tricep stretch