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Biceps brachii Supinates forearm; strongly flexes supinated elbow; weak shoulder flexor; checks upward translation of humeral head during deltoid abduction
Brachialis Strongly flexes forearm in all postions
Coracobrachialis Helps to flex and adduct arm weakly
Triceps brachii Extends the forearm powerfully; it is chief extensor of forearm; long head steadies head of abducted humerus
Anconeus Assists triceps in extending forearm; stabilizes elbow joint; abducts ulna during pronation
Radial collateral (off Deep Brachial) Radial current (off Radial)
Superior ulnar collateral(off Brachial) Posterior ulnar recurrent(off Ulnar)
What nerve innervates biceps brachii, Coracobrachialis, Brachialis? Musculocutaneous (C5,C6)
What nerve innervates Triceps brachii and Anconeus? Radial (C5-T1)
Inferior ulnar collateral (off Brachial) Anterior ulnar recurrent (off Ulnar)
Middle collateral (off Deep Brachial) Posterior interosseous recurrent (off Common Interosseous)
Anterior Compartment Biceps brachii and Brachialis
Posterior compartment Triceps brachii and Anconeus
Medial brachial cutaneous and Medial antebrachial cutaneous Medial Cord
Lateral superior cutaneous Axillary
Lateral inferior cutaneous and Posterior cutaneous Radial
Lateral antebrachial cutaneous musculocutaneous
Created by: apage