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The Forearm, Wrist, and Hand





1A subject who lacks an opponens pollicis and an adductor pollicis brevis muscle is nevertheless able to touch the tip of the thumb to the tip of the little finger. What muscle is substituting for them?
A)opponens digiti minimi
B)abductor pollicis longus
C)adductor pollicis
D)flexor pollicis brevis


2What is the best way to prevent the flexor digitorum profundus muscle from substituting for the flexor digitorum superficialis muscle?
A)allow motion to occur only at the distal interphalangeal joint.
B)stabilize the MCP joint of the finger being tested in extension.
C)stabilize in full extension the fingers not being tested.
D)palpate the tendon of the flexor digitorum superficialis on the palmar surface of the proximal phalanx.


3Which combination of symptoms indicates injury to the median nerve?
A)the middle and index fingers lose the ability to flex and the thumb cannot adduct or extend.
B)the ring and little fingers lose the ability to flex, and the little finger cannot abduct or oppose.
C)the inability of the wrist and fingers to extend interferes with grasp.
D)the middle and index fingers lose their ability to flex, and the thumb cannot oppose.


4Finkelstein's test is designed to assess involvement of which of the following contractile structures?
A)extensor pollicis longus and abductor pollicis brevis muscles.
B)extensor pollicis brevis and abductor pollicis longus muscles.
C)extensor pollicis longus and abductor pollicis longus muscles.
D)extensor pollicis brevis and abductor pollicis brevis muscles.


5All of the following are tests used in the diagnosis of carpal tunnel except.
A)Tinel's sign
B)Phalen's test
C)Reverse Phalen's
D)Allen test





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