Muscles of Anterior Compartment of Forearm

Question 0

Main action of pronator teres?

Answer 0

• Pronation of forearm

- Flexes forearm at elbow

Question 1

Name the muscles of the anterior compartment of the forearm?

Answer 1

1. Pronator teres
2. Flexor carpi radialis
3. Palmaris longus
4. Flexor carpi ulnaris
5. Flexor digitorum superficialis
6. Flexor digitorum profundus
7. Flexor pollicis longus
8. Pronator quadratus

Question 2

Main action of flexor carpi radialis?

Answer 2

• Flexes hand at wrist

- Abducts hand at wrist

Question 3

Main action of palmaris longus?

Answer 3

• Flexes hand at wrist

- Tightens palmar aponeurosis

Question 4

Main action of flexor carpi ulnaris?

Answer 4

• Flexes hand at wrist

- Adducts hand at wrist aponeurosis

Question 5

Main action of flexor digitorum superficialis?

Answer 5

Flexes middle phalanges at proximal interphalangeal joints of med. four digits

Question 6

Main action of flexor digitorum profundus?

Answer 6

• Flexes distal phalanges at distal interphalangeal joints of med. four digits
• Assists with flexion of hand

Question 7

Main action of flexor pollicis longus?

Answer 7

Flexes phalanges of thumb

Question 8

Main action of pronator quadratus?

Answer 8

• Pronates forearm

- Deep fibers bind ulna & radius together

Question 9

Innervation of pronator teres?

Answer 9

Median nerve

Question 10

Innervation of flexor carpi radialis?

Answer 10

Median nerve

Question 11

Innervation of palmaris longus?

Answer 11

Median nerve

Question 12

Innervation of flexor carpi ulnaris?

Answer 12

Ulnar nerve

Question 13

Innervation of flexor digitorum superficialis?

Answer 13

Median nerve

Question 14

Innervation of flexor digitorum profundus?

Answer 14

• Medial part: ulnar nerve

- Lateral part: median nerve

Question 15

Innervation of flexor pollicis longus?

Answer 15

Median nerve

Question 16

Innervation of pronator quadratus?

Answer 16

Median nerve

Question 17

Proximal attachment of pronator teres?

Answer 17

• Medial epicondyle of humerus

- Coronoid process of ulna

Question 18

Distal attachment of pronator teres?

Answer 18

Middle of lat. surface of radius

Question 19

Proximal attachment of flexor carpi radialis?

Answer 19

Medial epicondyle of humerus

Question 20

Distal attachment of flexor carpi radialis?

Answer 20

Base of 2nd metacarpal bone

Question 21

Proximal attachment of palmaris longus?

Answer 21

Medial epicondyle of humerus

Question 22

Distal attachment of palmaris longus?

Answer 22

• Distal half of flexor retinaculum

- Palmar aponeurosis

Question 23

Proximal attachment of flexor carpi ulnaris?

Answer 23

• Medial epicondyle of humerus

- Olecranon & post. border of ulna

Question 24

Distal attachment of flexor carpi ulnaris?

Answer 24

• Pisiform bone
• Hook of hamate bone
• 5th metacarpal bone

Question 25

Proximal attachment of flexor digitorum superficialis?

Answer 25

• Medial epicondyle of humerus
• Coronoid process of ulna
• Sup. ant. border of ulna

Question 26

Distal attachment of flexor digitorum superficialis?

Answer 26

Bodies of middle phalanges of medial four digits

Question 27

Proximal attachment of flexor digitorum profundus?

Answer 27

• Proximal 3/4s of med. & ant. surfaces of ulna

- Interosseous membrane

Question 28

Distal attachment of flexor digitorum profundus?

Answer 28

• Base of distal phalanges of med. four digitis

- Palmar aponeurosis

Question 29

Proximal attachment of flexor pollicis longus?

Answer 29

• Ant. surface of radius

- Interosseous membrane

Question 30

Distal attachment of flexor pollicis longus?

Answer 30

• Base of distal phalanx of 1st digit (thumb)

- Palmar aponeurosis

Question 31

Proximal attachment of pronator quadratus?

Answer 31

Distal fourth of ant. surface of ulna

Question 32

Distal attachment of pronator quadratus?

Answer 32

• Distal fourth of ant. surface of radius

- Palmar aponeurosis