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Muscles of Forearm

URI Anatomy Quiz 12: Muscles of the Forearm

QuestionAnswer
It's origin is the supraglenoid tubercle and coracoid process of the scapula. It inserts on the radial tuberosity of the radius and bicipital aponeurosis. It flexes the forearm and supinates the forearm and wrist; short head flexes the arm Biceps brachii muscle with the musculocutaneous nerve
It's origin is the anterior surface of the humerus, and it inserts on the ulna. It flexes the forearm. Brachialis muscle with the musculocutaneous nerve
It's origin is the supracondylar ridge of the humerus and it inserts on the radius. It flexes the forearm (stabilizes it for small, quick movements - the hammering muscle). Brachioradialis muscle with the radial nerve
It's origin is on the infraglenoid tubercle and shaft of the humerus, and it inserts on the ulna. It extends the forearm: the long head extends and adducts the humerus, Triceps brachii and the radial nerve
It's origin is the lateral epicondyle of the humerus, and it inserts on the ulna. It extends the forearm. Aconeus muscle with the radial nerve