Anterior Forearm Muscles

Question 1

Origin of the Pronator Teres

Answer 1

Medial epicondyle of humerus

Coronoid process of ulna

Question 2

Insertion of pronator teres

Answer 2

Middle of lateral surface of radius

Question 3

What does the pronator teres do?

Answer 3

Pronates and flexes the forearm at the elbow

Question 4

What innervates the pronator teres?

Answer 4

Median nerve

Question 5

Origin of the flexor carpi radialis

Answer 5

medial epicondyle of humerus

Question 6

Insertion of the flexor carpi radialis

Answer 6

Bases of 2nd and 3rd metacarpals

Question 7

What does the flexor carpi radials do?

Answer 7

Flexes the wrist and radial deviation

Question 8

What innervates the flexor carpi radialis?

Answer 8

Median nerve (C6, C7)

Question 9

Origin of palmaris longus

Answer 9

Medial epicondyle of humerus

Question 10

Insertion of palmaris longus

Answer 10

Distal half of flexor retinaculum and palmar aponeurosis

Question 11

What does the palmaris longus do?

Answer 11

Flexes hand (at wrist) and tightens palmar aponeurosis

Question 12

What innervates the palmaris longus?

Answer 12

Median nerve

Question 13

Origin of the flexor carpi ulnaris

Answer 13

Medial epicondyle of humerus

Olecranon and posterior border of ulna

Question 14

Insertion of the flexor carpi ulnaris

Answer 14

Pisiform
Hook of hamate
5th metacarpal

Question 15

What does the flexor carpi ulnaris do?

Answer 15

Flexes wrist and ulnar deviation (adducts) at the wrist

Question 16

What innervates the flexor carpi ulnaris?

Answer 16

Ulnar nerve

Question 17

Origin of the flexor digitorum superficialis

Answer 17

Medial epicondyle of humerus

Superior half of anterior border of radius

Question 18

Insertion of flexor digitorum superficialis

Answer 18

Bodies of middle phalanges of 2nd – 5th digits

Question 19

What does the flexor digitorum superficialis?

Answer 19

Flexes proximal phalanges at metacarpophalangeal joints and hand (strongest)
Flexes middle phalanges at proximal interphalangeal joints of medial four digits

Question 20

What innervates the flexor digitorum superficialis?

Answer 20

Median nerve

Question 21

Origin of the flexor digitorum profundus

Answer 21

Proximal 3/4 of medial and anterior surfaces of ulna and interosseous membrane

Question 22

Insertion of the flexor digitorum profundus

Answer 22

Base of the distal phalanx of digits 2nd – 5th

Question 23

What does the flexor digitorum profundus do?

Answer 23

Flexes distal phalanges at distal interphalangeal joints of medial four digits; assists with flexion of hand

Question 24

What innervates the flexor digitorum profundus?

Answer 24

Medial part: ulnar nerve

Lateral part: median nerve

Question 25

Origin of the flexor pollicis longus

Answer 25

Anterior surface of radius and adjacent interosseous membrane

Question 26

Insertion of the flexor pollicis longus

Answer 26

Base of distal phalanx of thumb

Question 27

What does the flexor pollicis longus do?

Answer 27

Flexes phalanges of 1st digit (thumb)

Question 28

What innervates the flexor pollicus longus?

Answer 28

Median nerve

Question 29

Origin of the pronator quadratus

Answer 29

Distal 1/4 of anterior surface of ulna

Question 30

Insertion of the pronator quadratus

Answer 30

Distal 1/4 of anterior surface of radius

Question 31

What does the pronator quadratus do?

Answer 31

Pronates forearm

Deep fibers bind radius and ulna together

Question 32

What innervates the pronator quadratus?

Answer 32

Median nerve