Which is an action of the lumbricals manus?
A)flexion of fingers two through five at the metacarpophalangeal joint
B)flexion of the hand at the wrist joint
C)extension of the hand at the wrist joint
D)abduction of fingers two through five at the metacarpophalangeal joint

Question

Quizplus · Accepted Answer

The lumbricals manus are four muscles that originate from the tendons of the flexor digitorum profundus in the hand and insert into the extensor expansion of the fingers. Their main action is flexion of fingers two through five at the metacarpophalangeal joint, which means they contribute to making a fist. Therefore, option A is the correct answer. Options B, C, and D are incorrect because they do not describe the action of the lumbricals manus.

Which Is an Action of the Lumbricals Manus