Muscles of anterior compartment of forearm

Question 1

Pronator Teres (PT) Origin-2

Answer 1

Ulnar head: Coronoid process of ulna

Humeral head: Medial epicondyle of humerus

Question 2

Pronator Teres (PT) Insertion

Answer 2

Middle of convexity of lateral surface of radius

Question 3

Pronator Teres (PT) Action

Answer 3

Pronates and flexes forearm

Question 4

Flexor carpi radialis (FCR) Origin

Answer 4

Medial epicondyle of humerus

Question 5

Flexor carpi radialis (FCR) Insertion

Answer 5

Base of 2nd (3rd) metacarpal

Question 6

Flexor carpi radialis (FCR) Action

Answer 6

Flexes and abducts hand (Radial deviation)

Question 7

Palmaris Longus Origin

Answer 7

Medial epicondyle of humerus

Question 8

Palmaris Longus Insertion-2

Answer 8

• Distal 1/2 of flexor retinaculum

- Palmar aponeurosis

Question 9

Palmaris Longus Action-2

Answer 9

• Flexes hand

- Tenses palmar aponeurosis

Question 10

Flexor carpi ulnaris (FCU) Origin-2

Answer 10

• Olecranon process

- Posterior border of ulna

Question 11

Flexor carpi ulnaris (FCU) Insertion-3

Answer 11

• Pisiform
• Hook of hamate
• 5th metacarpal

Question 12

Flexor carpi ulnaris (FCU) Action

Answer 12

Flexes and adducts hand (Ulnar deviation)

Question 13

Flexor digitorum superficialis (FDS) Origin-3

Answer 13

Humero-ulnar head:

• Medial epicondyle of humerus
• coronoid process of ulna

Radial head:
-Oblique line of radius

Question 14

Flexor digitorum superficialis (FDS) Insertion

Answer 14

Shafts of middle phalanges of medial 4 digits

Question 15

Flexor digitorum superficialis (FDS) Action-2

Answer 15

• Flexes proximal interphalangeal (IP) joints of middle 4 digits
• Flexes proximal phalanges at metacarpophalangeal (MCP) joints

Question 16

Flexor digitorum profundus (FDP) Origin-2

Answer 16

• Proximal 3/4 of medial and anterior surfaces of ulna

- Interosseous membrane

Question 17

Flexor digitorum profundus (FDP) Insertion

Answer 17

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

Question 18

Flexor digitorum profundus (FDP) Innervation-2

Answer 18

Anterior interosseous branch of Median nerve-digits 2+3

Ulnar nerve-Digits 4+5

Question 19

Flexor digitorum profundus (FDP) Action

Answer 19

• Flexes IP joints of medial 4 fingers

- Assists w/ wrist flexion

Question 20

Flexor pollicis longus (FPL) Origin-2

Answer 20

• Anterior surface of radius

- Interosseous membrane

Question 21

Flexor pollicis longus (FPL) Insertion

Answer 21

Base of distal phalanx of thumb

Question 22

Flexor pollicis longus (FPL) Action

Answer 22

Flexes phalanges of thumb

Question 23

Pronator quadratus Origin

Answer 23

Distal quarter of anterior surface of ulna

Question 24

Pronator quadratus Insertion

Answer 24

Distal 1/4 of anterior surface of radius

Question 25

Pronator quadratus Action

Answer 25

Pronates forearm

Question 26

Muscles innervated by median nerve

Answer 26

1) Pronator Teres
2) Flexor carpi radialis
3) Palmaris Longus
4) Flexor digitorum superficialis
5) Part of Flexor digitorum profundus

Question 27

Muscles innervated by the Anterior interosseous nerve (From median nerve)

Answer 27

1) Flexor pollicis longus

2) Pronator quadratus

Question 28

Muscles innervated by ulnar nerve

Answer 28

1) Flexor carpi ulnaris

2) Part of Flexor digitorum superficialis