Triceps Brachii
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
- Extension of the elbow
Innervation
- Radial nerve
Daily uses
- Pushing a door closed
Example strengthening exercises
- Tricep extension
- Overhead tricep extension
- Tricep dips
Example stretches
- Tricep stretch
Related injuries
- Inflammation or rupture of the triceps tendon
Related muscles
- Anconeus
- Latissimus dorsi
