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22 Cards in this Set
- Front
- Back
brachial plexus
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consists of nerve fibers which converge from different spinal cord levels, unite in new combinations then diverge again
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dorsal scapular nerve (direct branch of the ventral rami)
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C5; to rhomboid muscles
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long thoracic nerve (direct branch of ventral rami)
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C5-7; to serratus anterior muscle
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suprascapular nerve (direct branch from the trunk)
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C5-6; to supraspinatus and infraspinatus muscles
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Anterior division
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fibers that form the lateral and medial cords
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posterior division
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fibers that form the posterior cord
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lateral cord
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formed by anterior divisions of the upper and middle trunks C5-C7
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lateral pectoral nerve
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C5-7, supply to the clavicular head of the pectoralis major muscle
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posterior cord
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carries posterior fibers from all three trunks C5-T1
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upper subscapular nerve
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C5; subscapularis muscle
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thoracodorsal nerve
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C6-7; to the latissimus dorsi muscle
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lower subscapular nerve
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C6; to the subscapularis and teres major muscles
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medial cord
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carries anterior fibers only from the lower trunk C8-T1
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medial pectoral nerve
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C8-T1; sternal head of the pectoralis mahor and the pectoralis minor muscles
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medial antebrachial cuaneous nerve
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C8-T1
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meidal cutaneous nerve of the brachium
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T1
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medial root of the median nerve
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C8-T1
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musculocutaneous nerve
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from the lateral cord, C5-7; to the biceps brachii, supplies muscles and skin
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median nerve
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from the medial and lateral cords, C5-T1; to the skin of the palmar surface of radial half of hand
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ulnar nerve
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from the medial cord C8-T1; to the skin of the palmar and dorsal surfaces of ulnar half of hand
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axillary nerve
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from the posterior cord; C5-C6; to the deltoid and teres minor muscles
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radial nerve
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from the posterior cord C5-T1; to the extensor muscles of the arm, forarm, and hand and the brachioradialis muscle, to the skin on the back of the arm, forearm and hand
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