Forearm Muscles Identification & Action

Identify this muscle of the anterior compartment of the forearm. Note its insertions on the distal phalanges 2-5.

• flexor digitorum profundus
• flexor digitorum superficialis
• extensor digitorum
• extensor digiti minimi
• palmaris longus

Identify this muscle of the anterior compartment of the forearm. Note its insertions on the middle phalanges.

• flexor digitorum superficialis
• flexor digitorum profundus
• extensor digitorum
• extensor digiti minimi
• palmaris longus

Identify this muscle of the anterior compartment of the forearm.

• flexor carpi radialis
• flexor carpi ulnaris
• extensor carpi radialis brevis
• extensor carpi ulanris
• flexor digitorum profundus

Identify this muscle of the anterior compartment of the forearm.

• flexor carpi ulnaris
• flexor carpi radialis
• extensor carpi radialis brevis
• extensor carpi ulanris
• flexor digitorum superficialis

Identify this muscle of the posterior compartment.

• flexor digitorum profundus
• flexor digitorum superficialis
• extensor digitorum
• extensor digiti minimi
• extensor indicis

Identify this muscle of the posterior compartment.

• flexor digitorum profundus
• flexor digitorum superficialis
• extensor digitorum
• extensor digiti minimi
• extensor indicis

Identify this muscle of the posterior compartment. Note it does not reach all the way to the pinky finger.

• flexor carpi ulnaris
• extensor carpi ulnaris
• flexor carpi radialis
• extensor carpi radilalis longus
• extensor digiti minimi

The name of this highlighted muscle should include the word:

• digit minimi
• digitorum
• indicis
• carpi
• pollicis

Identify this muscle of the posterior compartment.

• flexor carpi ulnaris
• extensor carpi ulnaris
• flexor carpi radialis
• extensor carpi radilalis longus
• extensor digiti minimi

Indicate the action(s) of the FLEXOR DIGITORUM PROFUNDUS muscle. Choose all that apply.

• flexes thumb
• flexes fingers 2-5
• flexes wrist

• adducts wrist
• abducts wrist

Answer explanation

The name directly indicates that it flexes fingers 2-5.

However, because this muscle is part of the anterior compartment and crosses the anterior wrist joint, it can cause wrist flexion as well.