Q.

Regarding the thumb:

A. abductor pollicis longus originates from both radius and ulna
B. opponens pollicis rotates the first metacarpal on the triquetral
C. adductor pollicis inserts on to the radial sesamoid of the thumb, then the base of the proximal phalanx
D. nerve supply is by the median nerve (C7, C8)
E. adductor pollicis lies superficial to the thenar space
Answer» A. abductor pollicis longus originates from both radius and ulna
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