NERVE SUPPLY OF MUSCLES OF UPPER LIMB
SUMMARY OF NERVE SUPPLY OF MUSCLES OF UPPER LIMB:
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Dorsal scapular nerve (C5) |
Rhomboid minor, rhomboid major, levator scapulae muscles |
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Long thoracic nerve (C5, 6, 7) |
Serratus anterior muscle |
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Suprascapular nerve (C5,6) |
Supraspinatus & infraspinatus muscles |
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Nerve to subclavius (C5,6) |
Subclavius |
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Lateral pectoral nerve (C5,6,7) |
Pectoralis major muscle |
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Musculocutaneous nerve (C5,6,7) |
Coracobrachialis, biceps brachii, brachialis muscles |
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Upper subscapular nerve (C5,6) |
Subscapularis muscle |
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Thoracodorsal nerve (C6,7,8) |
Latissimus dorsi muscle |
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Lower subscapular nerve (C5,6) |
Subscapularis & teres major muscles |
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Axillary nerve (C5,6) |
Deltoid & teres minor muscles |
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Radial nerve (C5,6,7,8,T1) |
Triceps, anoconeus, part of brachialis, extensor carpi radialis longus |
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Medial pectoral nerve (C8,T1) |
Pectoralis major & minor muscles |
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Medial cutaneous nerve of arm joined by intercostal brachial nerve from second intercostal nerve (C8,T1,2) |
Skin of medial side of arm |
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Medial cutaneous nerve of forearm (C8;T1) |
Skin of medial side of forearm |
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Ulnar nerve (C8,T1) |
Flexor carpi ulnaris & medial half of flexor digitorum profundus, third & fourth lumbricals, interossei |
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Median nerve (C5,6,7,8;T1) |
Pronator teres, flexor carpi radialis, Palmaris longus, abductor pollicis brevis, first two lumbricals, flexor digitorum profundus (lateral half) |
Exam Important
- Musculocutaneous nerve supplies coracobrachialis, biceps brachii, and the greater part of the brachialis.
- Abductor pollicis brevis is supplied by Median nerve .
- Deltoid & teres minor muscles supplied by Axillary nerve (C5,6).
- In deltoid paralysis Axillary nerve is involved.
- Teres major muscles supplied by Lower subscapular nerve.
- Pectoralis major & minor muscles is supllied by Medial pectoral nerve.
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