muscles of the anterior forearm

Question 1

what are the superficial muscles of the anterior forearm?

Answer 1

• pronator teres
• flexor carpi ulnaris
• palmaris longus
• flexor carpi radialis

Question 2

1. what is the origin of pronator teres?
2. what is the insertion of pronator teres?
3. what is the action of pronator teres?
4. what is the innervation of pronator teres?

Answer 2

1. medial epicondyle
2. radius
3. pronation
4. median nerve

Question 3

1. what is the origin of flexor carpi ulnaris?
2. what is the insertion of flexor carpi ulnaris?
3. what is the action of flexor carpi ulnaris?
4. what is the innervation of flexor carpi ulnaris?

Answer 3

1. medial epicondyle
2. pisiform
3. wrist flexion + wrist adduction
4. ulnar nerve

Question 4

1. what is the origin of palmaris longus?
2. what is the insertion of palmaris longus?
3. what is the action of palmaris longus?
4. what is the innervation of palmaris longus?

Answer 4

1. medial epicondyle
2. flexor retinaculum
3. wrist flexion
4. median nerve

Question 5

1. what is the origin of flexor carpi radialis?
2. what is the insertion of flexor carpi radialis?
3. what is the action of flexor carpi radialis?
4. what is the innervation of flexor carpi radialis?

Answer 5

1. medial epicondyle
2. metacarpals II + III
3. wrist flexion + wrist abduction
4. median nerve

Question 6

what is the intermediate muscle of the anterior forearm?

Answer 6

• flexor digitorum superficialis

Question 7

1. what is the origin of flexor digitorum superficialis?
2. what is the insertion of flexor digitorum superficialis?
3. what is the action of flexor digitorum superficialis?
4. what is the innervation of flexor digitorum superficialis?

Answer 7

1. humerus medial epicondyle
2. middle phalange of fingers II-V
3. flexes MCPJ + PIPJ
4. median nerve

Question 8

what are the deep muscles of the anterior forearm?

Answer 8

• flexor digitorum profundus
• flexor pollicis longus
• pronator quadratus

Question 9

1. what is the origin of flexor digitorum profundus?
2. what is the insertion of flexor digitorum profundus?
3. what is the action of flexor digitorum profundus?
4. what is the innervation of flexor digitorum profundus?

Answer 9

1. ulnar
2. distal phalanges of finger II - V
3. flexes IPJ + MCPJ
4. medial half = ulnar nerve + lateral half = median nerve

Question 10

1. what is the origin of flexor pollicis longus?
2. what is the insertion of flexor pollicis longus?
3. what is the action of flexor pollicis longus?
4. what is the innervation of flexor pollicis longus?

Answer 10

1. radius
2. distal phalanx of thumb
3. flex IPJ + MCPJ of thumb
4. median nerve

Question 11

1. what is the origin of pronator quadratus?
2. what is the insertion of pronator quadratus?
3. what is the action of pronator quadratus?
4. what is the innervation of pronator quadratus?

Answer 11

1. ulnar
2. radius
3. pronation
4. median nerve