* Long head originates from the infraglenoid tubercle, lateral head from the posterior surface of humerus ( superior to radial groove), and medial head inferior to radial groove.
* Inserts at the posterior surface of the olecranon process of the ulna.
* Supplied by the radial nerve.
* Works by extending the forearm.
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* Long head originates from the infraglenoid tubercle, lateral head from the posterior surface of humerus ( superior to radial groove), and medial head inferior to radial groove.
* Inserts at the posterior surface of the olecranon process of the ulna.
* Supplied by the radial nerve.
* Works by extending the forearm.
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