Anterior Forearm Muscles

Question 0

Insertion of pronator teres

Answer 0

Middle of convexity of lateral surface of radius

Question 1

Origin of pronator teres

Answer 1

Ulnar head: coronoid process of ulna

Humeral head: Medial epicondyle of humerus

Question 2

Innervation of pronator teres

Answer 2

Median nerve (C6, C7)

Question 3

Action of pronator teres

Answer 3

Pronates and flexes the forearm

Question 4

Origin of flexor carpi radialis

Answer 4

Medial epicondyle of humerus

Question 5

Insertion of flexor carpi radialis

Answer 5

Base of 2nd metacarpal

Question 6

Innervation of flexor carpi radialis

Answer 6

Median nerve (C6, C7)

Question 7

Action of flexor carpi radialis

Answer 7

Flexes and abducts hand at wrist

Question 8

Origin of palmaris longus

Answer 8

Medial epicondyle of humerus

Question 9

Insertion of palmaris longus

Answer 9

Distal half of flexor retinaculum

Palmar aponeurosis

Question 10

Innervation of palmaris longus

Answer 10

Median nerve (C7, C8)

Question 11

Action of palmaris longus

Answer 11

Flexes hand and tenses palmar aponeurosis

Question 12

Origin of flexor carpi ulnaris

Answer 12

Olecranon and posterior border of ulna (via aponeurosis)

Question 13

Insertion of flexor carpi ulnaris

Answer 13

Pisiform
Hook of hamate
5th metacarpal

Question 14

Innervation of flexor carpi ulnaris

Answer 14

Ulnar nerve (C7, C8)

Question 15

Action of flexor carpi ulnaris

Answer 15

Flexes and adducts hand at wrist

Question 16

Origin of flexor digitorum superficialis

Answer 16

Humero-ulnar head: medial epicondyle of humerus and coronoid process of ulna
Radial head: oblique line of radius

Question 17

Insertion of flexor digitorum superficialis

Answer 17

Shafts of middle phalanges of medial four digits

Question 18

Innervation of flexor digitorum superficialis

Answer 18

Median nerve (C7, C8, T1)

Question 19

Action of flexor digitorum superficialis

Answer 19

Flexes wrist joint
Flexes proximal interphalangeal joints of middle four digits
Acting more strongly, it also flexes proximal phalanges at metacarpophalangeal joints

Question 20

Origin of flexor digitorum profundus

Answer 20

Proximal three quarters of medial and anterior surfaces of ulna and interosseous membrane

Question 21

Insertion of flexor digitorum profundus

Answer 21

Bases of distal phalanges of 2nd, 3rd, 4th, and 5th digits

Question 22

Innervation of flexor digitorum profundus

Answer 22

Lateral part (to digits 2 and 3): Median nerve (C8, T1)
Medial part (to digits 4 and 5): Ulnar nerve (C8, T1)

Question 23

Action of flexor digitorum profundus

Answer 23

Flexes wrist joint
Flexes distal interphalangeal joints of digits 2, 3, 4, and 5
Assists with wrist flexion

Question 24

Origin of flexor pollicis longus

Answer 24

Anterior surface of radius and adjacent interosseous membrane

Question 25

Insertion flexor pollicis longus

Answer 25

Base of distal phalanx of thumb

Question 26

Innervation of flexor pollicis longus

Answer 26

Anterior interosseous nerve, from median nerve (C8, T1)

Question 27

Action of flexor pollicis longus

Answer 27

Flexes wrist

Flexes metacarpophalangeal and interphalangeal joints of thumb

Question 28

Origin of pronator quadratus

Answer 28

Distal quarter of anterior surface of ulna

Question 29

Insertion of pronator quadratus

Answer 29

Distal quarter of anterior surface of radius

Question 30

Innervation of pronator quadratus

Answer 30

Anterior interosseous nerve, from median nerve (C8, T1)

Question 31

Action of pronator quadratus

Answer 31

Pronates forearm

Deep fibers bind radius and ulna together