• Triceps brachii
  • Anconeus
MuscleActionOriginInsertionInnervationBlood supply
Triceps Brachii- Extension of Elbow
- Extension of shoulder
- Long head: Infraglenoid tubercle of scapula
- Medial head: Distal half of posterior humerus
- Lateral head: Proximal half of posterior humerus
- Olecranon process of Ulna- Radial nerve; C7, 8- Brachial artery
Anconeus- Assists elbow extension
- Stabilises elbow joint
- abducts ulna during pronation
- Lateral epicondyle of humerus- Olecranon
- Proximal surface of ulna
- Radial nerve: C7,8,T1- Deep brachial artery (middle collateral branch)
- recurrent interosseous artery