Muscles of the Anterior Compartment of the Forearm

Question 1

What are the superficial muscles of the anterior compartment of the forearm

Answer 1

Flexor carpi ulnaris
Palmaris longus
Flexor carpi radialis
Pronator teres

Question 2

What is the general function of superficial muscles of the anterior compartment of the forearm

Answer 2

Flexion at the wrist and fingers

Pronation

Question 3

Where do the superficial muscles of the anterior compartment of the forearm originate

Answer 3

From a common tendon which arises from the medial epicondyle of the humerus

Question 4

Where does flexor carpi ulnaris originate

Answer 4

Medial epicondyle

Long origin from the ulna

Question 5

Where does flexor carpi ulnaris insert

Answer 5

Pisiform

Question 6

What is the function of flexor carpi ulnaris

Answer 6

Wrist flexion

Wrist adduction

Question 7

Which nerve innervates flexor carpi ulnaris

Answer 7

Ulnar nerve

Question 8

Where does palmaris longus originate

Answer 8

Medial epicondyle

Question 9

Where does palmaris longus insert

Answer 9

Flexor retinaculum of the wrist

Question 10

What is the actionof palmaris longus

Answer 10

Wrist flexion

Question 11

Which nerve innervates palmaris longus

Answer 11

Median nerve

Question 12

Where does flexor carpi radialis originate

Answer 12

Medial epicondyle

Question 13

Where does flexor carpi radialis insert

Answer 13

Base of metacarpals II and III

Question 14

What is the action of flexor carpi radialis

Answer 14

Wrist flexion

Wrist abduction

Question 15

Which nerve innervates flexor carpi radialis

Answer 15

Median nerve

Question 16

Which muscle forms the medial border of the cubital fossa

Answer 16

Lateral border of pronator teres

Question 17

Where does pronator teres originate

Answer 17

Medial epicondyle

Coronoid process of the ulna

Question 18

Where does pronator teres insert

Answer 18

Laterally to the mid-shaft of the radius

Question 19

What is the action of pronator teres

Answer 19

Pronation of the forearm

Question 20

Which nerve innervates pronator teres

Answer 20

Median nerve

Question 21

What are the intermediate muscles of the anterior compartment of the forearm

Answer 21

Flexor digitorum superficialis

Question 22

What passes between the two heads of flexor digitorum superficialis

Answer 22

Median nerve

Ulnar artery

Question 23

Where do the median nerve and ulnar artery travel after passing through the two heads of flexor digitorum superficialis

Answer 23

Posteriorly

Question 24

Where does flexor digitorum superficialis originate

Answer 24

Two heads:-
Medial epicondyle of the humerus
Radius

Question 25

Where does flexor digitorum superficialis insert

Answer 25

Splits into four tendons at the wrist
Travels through the carpal tunnel
Attaches to the middle phalanges of the four fingers

Question 26

What is the action of flexor digitorum superficialis

Answer 26

Flexes MCPJs and PIPJs at the four fingers

Flexes the wrist

Question 27

Which nerve innervates flexor digitorum superficialis

Answer 27

Median nerve

Question 28

What are the deep muscles of the anterior compartment of the forearm

Answer 28

Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus

Question 29

Where does flexor digitorum profundus originate

Answer 29

Ulna

Associated interosseous membrane

Question 30

Where does flexor digitorum profundus insert

Answer 30

Splits into four tendons at the wrist
Passes through the carpal tunnel
Attaches to the distal phalanges of the four fingers

Question 31

What is the action of flexor digitorum profundus

Answer 31

Flex DIPJs (only muscle that can)
Flexes MCPJs
Wrist flexion

Question 32

Which nerves innervate flexor digitorum profundus

Answer 32

Medial half innervated by ulnar nerve

Lateral half innervated by anterior interosseous branch of the median nerve

Question 33

Where does flexor pollicis longus lie

Answer 33

Lateral to flexor digitorum profundus

Question 34

Where does flexor pollicis longus originate

Answer 34

Anterior surface of the radius

Surrounding interosseous membrane

Question 35

Where does flexor pollicis longus insert

Answer 35

Base of the distal phalanx of the thumb

Question 36

What is the action of flexor pollicis longus

Answer 36

Flexes interphalangeal joint and MCPJ of the thumb

Question 37

Which nerve innervates flexor pollicis longus

Answer 37

Anterior interosseous branch of the median nerve

Question 38

Where does pronator quadratus lie

Answer 38

Deep to the tendons of FDP and FPL

Question 39

Where does pronator quadratus originate

Answer 39

Anterior surface of the ulna

Question 40

Where does pronator quadratus insert

Answer 40

Anterior surface of the radius

Question 41

What is the action of pronator quadratus

Answer 41

Pronates the forearm

Question 42

What nerve innervates pronator quadratus

Answer 42

Anterior interosseous branch of the median nerve