Due to its name and position in the forearm (posterior medial side of the forearm), the actions of the extensor carpi ulnaris are most likely to
A)flex the wrist and abduct the thumb.
B)flex the wrist and adduct the hand.
C)flex the wrist and abduct the hand.
D)extend the wrist and abduct the hand.
E)extend the wrist and adduct the hand.

Question

Quizplus · Accepted Answer

The extensor carpi ulnaris muscle is responsible for extending the wrist and adducting the hand towards the midline of the body. Its name also suggests that it is located near the ulna bone of the forearm. A and C are incorrect because they involve wrist flexion, and B involves adduction of the thumb, not the hand. D is incorrect because it involves wrist abduction, which is opposite to the action of the extensor carpi ulnaris. Therefore, E (extend the wrist and adduct the hand) is the best choice.

Due to Its Name and Position in the Forearm (Posterior