Deep Compartment Of Anterior Forearm

Question 1

What are the muscles in the deep compartment of the anterior forearm? (3)

Answer 1

Flexor pollicis longus, flexor digitorum profundus, pronator quadratus

Question 2

Origin of flexor pollicis longus

Answer 2

Anterior surface of radius and surrounding interosseous membrane

Question 3

Insertion of flexor pollicis longus

Answer 3

Base of distal phalanx of thumb

Question 4

Action of flexor pollicis longus

Answer 4

Flexes IPJ and MCPJ of thumb

Question 5

Innervation of flexor pollicis longus

Answer 5

Median nerve

Question 6

Origin of flexor digitorum profundus

Answer 6

Ulna and associated interosseous membrane

Question 7

Insertion of flexor digitorum profundus

Answer 7

Distal phalanges of 4 fingers

Question 8

Action of flexor digitorum profundus

Answer 8

Flex DIPJs of fingers, flexes MCPJs at wrist

Question 9

Innervation of flexor digitorum profundus

Answer 9

Medial half- ulnar nerve
Lateral half- anterior interosseous branch of median nerve

Question 10

Origin of pronator quadratus

Answer 10

Anterior surface of ulna

Question 11

Insertion of pronator quadratus

Answer 11

Anterior surface of radius

Question 12

Action of pronator quadratus

Answer 12

Pronates forearm

Question 13

Innervation of pronator quadratus

Answer 13

Median nerve