Myotomes

Question 1

C4

Answer 1

-Action: Scapular/shoulder elevation
-Muscle: Upper trapezius, levator scapulae

Question 2

C5

Answer 2

-Action: Shoulder abduction & flexion
-Muscle: Deltoid

Question 3

C5, C6

Answer 3

-Action: Elbow flexion
-Muscle: Biceps
-Action: Wrist extension
-Muscle: Extensor carpi radialis longus and brevis

Question 4

C7

Answer 4

-Action: Elbow extension
-Muscle: Triceps
-Action: Wrist flexion
-Muscle: Flexor carpi radialis and ulnaris

Question 5

C8

Answer 5

-Action: Ulnar deviation
-Muscle: Flexor carpi ulnaris and extensor carpi ulnaris

Question 6

T1

Answer 6

-Action: Digit abduction/adduction
-Muscle: Interossei

Question 7

L2, L3

Answer 7

-Action: Hip flexion
-Muscle: Iliopsoas

Question 8

L2, L3, L4

Answer 8

-Action: Knee extension
-Muscle: Quadriceps

Question 9

L4

Answer 9

-Action: Ankle dorsiflexion
-Muscle: Tibialis anterior

Question 10

L5

Answer 10

-Action: Extension of great toe
-Muscle: Extensor hallucis longus

Question 11

S1

Answer 11

-Action: Plantarflexion
-Muscle: Gastrocnemius
-Action: Ankle eversion
-Muscle: Fibularis longus and brevis