Anterior Compartment of the Forearm

Question 1

What are the muscles in the superficial layer of the anterior compartment of the forearm?

Answer 1

• Pronator teres
• Flexor carpi radialis
• Palmaris longus
• Flexor carpi ulnaris
  (From index to ring finger)

Question 2

What is the muscle in the intermediate layer of the anterior compartment of the forearm?

Answer 2

Flexor digitorum superficialis

Question 3

What are the muscles in the deep layer of the anterior compartment of the forearm?

Answer 3

• Flexor pollicis longus (thumb side)
• Flexor digitorum profundus (ulnar side)
• Pronator quadratus

Question 4

What are the muscles in the anterior compartment of the forearm innervated by? What are the exceptions?

Answer 4

• All innervated by median nerve
• Except flexor carpi ulnaris and ulnar (medial) half of flexor digitorum profundus - ulnar nerve

Question 5

What is the action of the muscles in the anterior compartment of the forearm?

Answer 5

• Flexion of the wrist and digits
• Abduction and adduction of the wrist
• Pronation of the forearm