Muscles of Hand and Arm

Which muscle is responsible for abducting the thumb?

• Flexor pollicis longus

• Adductor pollicis

• Abductor pollicis longus

• Abductor pollicis brevis

What is the primary function of the flexor digitorum superficialis?

• To extend the fingers

• To flex the wrist

• To flex the middle phalanges of the fingers

• To abduct the fingers

Which of the following muscles is NOT located in the hand?

• Opponens pollicis

• Palmaris longus

• Lumbricals

• Dorsal interossei

The brachioradialis muscle is primarily involved in which movement?

• Pronation of the forearm

• Supination of the forearm

• Flexion of the elbow

• Extension of the elbow

Which muscle group is responsible for the extension of the wrist and fingers?

• Flexor carpi group

• Extensor carpi group

• Anconeus group

• Pronator group

The opponens digiti minimi is a muscle that allows for what movement of the little finger?

• Extension

• Adduction

• Opposition

• Flexion

Which muscle is primarily responsible for pronating the forearm?

• Pronator teres

• Pronator quadratus

• Supinator

• Brachialis

The intrinsic muscles of the hand are involved in all of the following movements EXCEPT:

• Wrist flexion

• Finger abduction

• Finger adduction

• Thumb opposition

What is the role of the palmar interossei muscles?

• To abduct the fingers

• To adduct the fingers

• To flex the fingers

• To extend the fingers

Which muscle helps in the flexion of the thumb and is also involved in the opposition of the thumb?

• Extensor pollicis brevis

• Flexor pollicis brevis

• Abductor pollicis longus

• Adductor pollicis