Spinal Segment key muscles/movements, reflex, and sensory regions

Question 1

C4

Answer 1

Upper trapezius
Shrug
no reflex
Upper trap, lower neck

Question 2

C5

Answer 2

Deltoid, Biceps
shoulder abduction, elbow flexion
Biceps tendon reflex
Deltoid area

Question 3

C6

Answer 3

Wrist extension, Biceps
Wrist extension, elbow flexion
Brachioradialis tendon reflex
Radial border of hand

Question 4

C7

Answer 4

Wrist flexors, Triceps
Wrist flexion, elbow extension
Triceps tendon reflex
Index, middle, and ring finger

Question 5

C8

Answer 5

Thenar muscles
Thumb extension
no reflex
Ulnar border of hand

Question 6

T1

Answer 6

Interossei
Abduction and adduction of fingers
no reflex
Medial arm

Question 7

L2

Answer 7

Iliopsoas
Hip flexion
no reflex
Anterolateral thigh

Question 8

L3

Answer 8

Iliopsoas, quads
Hip flexion, knee extension
Patellar tendon reflex
Anteromedial and distal thigh

Question 9

L4

Answer 9

Tibialis anterior
Ankle dorsiflexion
Patellar tendon reflex
Medial calf and ankle

Question 10

L5

Answer 10

Extensor hallucis longus
Toe extension
no reflex
lateral leg, anterior shin and foot

Question 11

S1

Answer 11

Fibularis longus/brevis
Plantar flexion and eversion
Achilles tendon reflex
Lateral ankle and foot

Question 12

S2

Answer 12

Hamstrings
Knee flexion
no reflex (?)
Medial posterior thigh