Forearm Muscles

Question 0

What holds the tendons of the flexor muscles at the distal end?

Answer 0

Palmar carpal ligament

Flexor retinaculum

Question 1

How many muscle are in the anterior superficial layer?

Answer 1

4

Question 2

How many muscles are in the anterior intermediate layer?

Answer 2

1

Question 3

How many muscles are in the anterior deep layer?

Answer 3

Three

Question 4

Name the four muscles of the anterior superficial layer

Answer 4

Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris

Question 5

Name the muscle in the anterior intermediate layer

Answer 5

Flexor digitorum superficialis

Question 6

Name the three muscles of the anterior deep compartment

Answer 6

Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus

Question 7

What are the only muscles not supplied by the median nerve in the anterior compartment? What are they supplied by?

Answer 7

Flexor carpi ulnaris

Medial half of the flexor digitorum profundus

Question 8

Actions of the pronator teres?

Answer 8

Pronates and flexes forearm

Question 9

Action of the flexor carpi radialis?

Answer 9

Flexes and abducts hand at wrist

Question 10

Action of flexor carpi ulnaris?

Answer 10

Flexes and adducts hand at wrist

Question 11

Action of palmaris longus?

Answer 11

Flexes hand at wrist

Question 12

Action of the flexor digitorum superficialis?

Answer 12

Flexes middle phalanges at proximal IP joints

Flexes proximal phalanges at MCP joints

Question 13

Action of the flexor digitorum profundus?

Answer 13

Flexes distal phalanges 2,3,4,5 at distal IP joints

Question 14

From the posterior compartment, which muscles extend and abduct/adduct the hand at the wrist joint?

Answer 14

Extensor carpi radialis longus
Extensors carpi radialis brevis
Extensor carpi ulnaris

Question 15

Of the posterior compartment, which muscles extend the medial four fingers?

Answer 15

Extensor digitorum
Extensor indicis
Extensor digiti minimi

Question 16

Of the posterior compartment, which muscles extend/abduct the thumb?

Answer 16

Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus

Question 17

What holds the extensor tendons in place at the wrist?

Answer 17

Extensor retinaculum

Question 18

Action of the brachioradialis?

Answer 18

Flexion of forearm

Question 19

Action of extensor carpi radialis longus and brevis?

Answer 19

Extend and abduct hand at the wrist joint

Question 20

Action of the extensor digitorum?

Answer 20

Extends medial four digits at MCP joints and IP joint

Question 21

Action of extensor digiti minimi?

Answer 21

Extends 5th digit at MCP joint and IP joint

Question 22

Action of the extensor indicis?

Answer 22

Extends second digit

Extends hand at wrist

Question 23

Action of abductor pollicis longus?

Answer 23

Abducts thumb and extends it at carpometacarpal joint

Question 24

Action of extensor pollicis longus?

Answer 24

Extends distal phalanx of thumb at IP joint

Extends MCP and carpometacarpal joints

Question 25

Action of extensor pollicis brevis?

Answer 25

Extends proximal phalanx of thumb at MCP joint

Extends carpometacarpal joint