Muscular Movements in the Hand and Wrist Quiz

Flexor carpi radialis flexes the wrist by pulling the hand toward the forearm.

Abductor pollicis brevis primarily abducts the thumb away from the palm.

Abductor digiti minimi is the primary muscle responsible for the abduction of the little finger.

The median nerve is the primary innervator for the muscles responsible for thumb abduction.

Opponens pollicis is the primary muscle responsible for opposing the thumb, allowing grasping and manipulation.

The median nerve primarily innervates the muscles responsible for wrist flexion.

Adductor pollicis is the primary muscle responsible for bringing the thumb toward the palm.

The median nerve is the primary innervator for the muscles responsible for finger flexion.

Extensor carpi radialis longus extends the wrist by pulling the hand backward.

Flexor carpi ulnaris primarily causes ulnar deviation of the wrist by pulling the hand toward the ulna side.

Extensor digitorum is the primary muscle group responsible for extending the fingers.

Flexor carpi radialis primarily causes radial deviation of the wrist by pulling the hand toward the radius side.

Flexor digiti minimi brevis is not involved in finger abduction; it is primarily responsible for little finger flexion.

Opponens digiti minimi is the primary muscle responsible for opposing the little finger, aiding in fine motor tasks.

Abductor digiti minimi is not involved in opposition of the thumb; it is responsible for little finger abduction.

Adductor pollicis assists in both flexion and adduction of the thumb, helping bring it closer to the palm.

Opponens pollicis assists in both opposing and flexing the thumb, contributing to precise movements.

Abductor pollicis longus assists in both the abduction and extension of the thumb.

Adductor pollicis assists in both adduction and flexion of the index finger, supporting fine motor movements.