dermatome levels

Question 1

what is a dermatome

Answer 1

areas of the skin whose sensory distribution is innervated by the afferent nerve fibres of a singular spinal nerve root

Question 2

c2 dermatome

Answer 2

temple, forehead, occiput

Question 3

c3 dermatome

Answer 3

entire neck, under mandible

Question 4

c4 dermatome

Answer 4

shoulder area - clavicular area and upper scapular area

Question 5

c5 dermatome

Answer 5

deltoid area - anterior aspect of entire arm to base of thumb

Question 6

c6 dermatome

Answer 6

anterior arm - radial side of hand to thumb and index finger

Question 7

c7 dermatome

Answer 7

lateral arm and forearm to index, long and ring fingers

Question 8

c8 dermatome

Answer 8

medial arm and forearm to long ring and little fingers

Question 9

t1 dermatome

Answer 9

medial side of forearm to base of little finger

Question 10

t2 dermatome

Answer 10

medial side of upper arm to medial elbow, pectoral and midscapular areas

Question 11

t3-6 dermatome

Answer 11

upper thorax

Question 12

t5-7 dermatome

Answer 12

costal margin

Question 13

t8-12

Answer 13

abdomen and lumbar region

Question 14

L1 dermatome

Answer 14

back, over trochanter and groin

Question 15

L2 dermatome

Answer 15

back, front of thigh to knee

Question 16

L3 dermatome

Answer 16

back, upper buttock, anterior thigh and knee, medial lower leg

Question 17

L4 dermatome

Answer 17

medial buttock, lateral thigh, medial leg and dorsum of foot, big toe

Question 18

L5 dermatome

Answer 18

buttock, posterior and lateral thigh, lateral aspect of leg, dorsum of foot. medial half of sole, first second and third toes

Question 19

s1&2 dermatome

Answer 19

buttock thigh and leg posterior

Question 20

s3 dermatome

Answer 20

groin, medial thigh to knee

Question 21

s4 dermatome

Answer 21

perineum, genitals and lower sacrum

Question 22

coccygeal dermatome

Answer 22

buttocks in the area around the coccyx