dermatomes and cn

Question 1

C2

Answer 1

posterior half of skull

Question 2

C3

Answer 2

high turtleneck shirt

Question 3

C4

Answer 3

low collar shirt

Question 4

C5

Answer 4

ventral axial line of upper limb

Question 5

C6

Answer 5

thumb and index finger

Question 6

C7

Answer 6

middle finger and palm of hand

Question 7

C8

Answer 7

ring and little finger

Question 8

T4

Answer 8

nipples

Question 9

T6

Answer 9

xiphoid process

Question 10

L1

Answer 10

inguinal ligament

Question 11

L4

Answer 11

knee caps

Question 12

L5

Answer 12

Big toe

Question 13

L6

Answer 13

small toe

Question 14

CN3 palsy

Answer 14

• ptosis
• down and out
• fixed dilated pupil

Question 15

CN IV palsy

Answer 15

• defective downward gaze
• verticle diplopia

Question 16

CNV lesions

Answer 16

• trigeminal neuralgia
• loss corneal reflec
• loss facial sensation
  #- deviation jaw to weak side

Question 17

CN VI palsy

Answer 17

• defective abduction
• horizontal diplopia

Question 18

VII lesions

Answer 18

• flaccid paralysis upper and lower face
• loss corneal reflex
• loss of taste
• hyperacuisis

Question 19

IX lesions

Answer 19

• hypersensitive carotid sinus reflex
• loss of gag reflex

Question 20

X lesions

Answer 20

• uvula away from site of lesion
• loss of gag

Question 21

XI lesions

Answer 21

• weakn ess turning head to cl side

Question 22

XII lesions

Answer 22

• tongue to site of lesion