Which is an action of the opponens pollicis?
A)lateral rotation of the thumb at the carpometacarpal joint
B)extension of the thumb at the interphalangeal joint
C)extension of the thumb at the carpometacarpal joint
D)opposition of the thumb at the carpometacarpal joint

Question

Quizplus · Accepted Answer

The opponens pollicis muscle is responsible for opposition of the thumb at the carpometacarpal joint, allowing the thumb to touch the other fingers. It does not perform lateral rotation or extension of the thumb at any joint.

Which Is an Action of the Opponens Pollicis