1. What muscles in the arm are innervated by the median nerve?
2. Which of these muscles are innervated by the anterior interosseous nerve?
3. What branches of the median nerve provide sensation to the hand?
4. What muscles are innervated by the median nerve after it passes through the carpal tunnel?
Answers:
1. Pronator teres, flexor carpi radialis, palmaris, flexor digitorum superficialis, flexor digitorum profundus, abductor pollicis brevis, flexor pollicis longus, pronator quadratus, opponens pollicis, superficial head of flexor pollicis brevis, 1st and 2nd lumbricals.
2. FPL, FDP, PQ.
3. The thenar cutaneous nerve, which branches before the carpal tunnel, provides sensation to the thenar eminence. The palmar cutaneous nerve provides sensation to the radial portion of the hand and first three fingers, and half of the 4th finger.
4. LOAF: Lumbricals, Opponens pollicis, APB, and FPB.
Wednesday, April 23, 2008
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