Which is an action of the extensor pollicis longus?
A) flexion of the thumb at the carpometacarpal,metacarpophalangeal,and interphalangeal joints
B) flexion of the hand at the wrist joint
C) extension of the thumb at the carpometacarpal,metacarpophalangeal,and interphalangeal joints
D) ulnar deviation (adduction) of the hand at the wrist joint
Correct Answer:
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