Which of the following is an extrinsic muscle of the wrist?
A) Extensor pollicis brevis
B) Flexor digiti minimi
C) Abductor pollicis brevis
D) Flexor pollicis brevis

Question

Quizplus · Accepted Answer

The extensor pollicis brevis is an extrinsic muscle of the wrist, as it originates outside of the wrist and inserts at the base of the thumb. The other options (flexor digiti minimi, abductor pollicis brevis, and flexor pollicis brevis) are all intrinsic muscles of the hand/wrist as they originate and insert within the hand/wrist.

Which of the Following Is an Extrinsic Muscle of the Wrist