Myotomes

Question 1

Shoulder abduction

Answer 1

C5; middle deltoid

Question 2

Shoulder adduction

Answer 2

C6, C7; pectoralis major

Question 3

Elbow flexion

Answer 3

C5, C6; brachialis

Question 4

Elbow extension

Answer 4

C7, C8; triceps brachii

Question 5

Supination

Answer 5

C6; biceps brachii

Question 6

Pronation

Answer 6

C7, C8; pronator teres

Question 7

Wrist flexion

Answer 7

C6, C7; flexor digitorum profundus

Question 8

Wrist extension

Answer 8

C6, C7; extensor digitorum

Question 9

Finger flexion

Answer 9

C7, C8; flexor digitorum profundus/ flexor pollicis longus

Question 10

Finger extension

Answer 10

C7, C8; extensor digitorum/ extensor pollicis longus

Question 11

Finger adduction

Answer 11

C8, T1; palmar interosseous/ adduction pollicis

Question 12

Finger abduction

Answer 12

C8, T1; dorsal interosseous/ abductor pollicis longus/ abductor digiti minimi