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Arm Muscles part II
Origins, Insertions, Actions, Innervations of elbow flexors and extenders
Question | Answer |
---|---|
Triceps Brachii (3 Heads) - Origin: | Long: Infraglenoid tubercle of humerus Lateral: Posterior surface of radius, above and lateral to Radial Groove Medial: Posterior surface of radius, below and medial to Radial Groove |
Triceps Brachii - Insertion | Posterior Surface of Olecranon Process of Ulna |
Triceps Brachii - Action | Extends elbow joint, (long head) also assist in extending arm at shoulder joint. |
Triceps Brachii - Nerve | Radial Nerve |