Dermatomes

Question 1

C1

Answer 1

Vertex of skull

Question 2

C2

Answer 2

Temple, forehead, and occiput

Question 3

C3

Answer 3

Entire neck, posterior cheek, temporal area, prolongation forward under mandible

Question 4

C4

Answer 4

Shoulder area, clavicular area, and upper scapular area

Question 5

C5

Answer 5

Deltoid area, anterior aspect of entire arm to base of 1st digit

Question 6

C6

Answer 6

Anterior arm, radial side of hand to 1st and 2nd digit

Question 7

C7

Answer 7

Lateral arm and forearm to 2nd, 3rd, and 4th digit

Question 8

C8

Answer 8

Medial arm and forearm to 3rd, 4th, and 5th digit

Question 9

T1

Answer 9

Medial side of forearm to base of 5th digit

Question 10

T2

Answer 10

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

Question 11

T3-T12

Answer 11

T3-T6 upper thorax; T5-T7 costal margin; T8-T12 abdomen and lumbar region

Question 12

L1

Answer 12

Back, over greater trochanter and groin

Question 13

L2

Answer 13

Back, anterior thigh to knee

Question 14

L3

Answer 14

Back, upper gluteal, anterior thigh and knee, and medial lower leg

Question 15

L4

Answer 15

Medial gluteal, lateral thigh, medial leg, dorsum of foot, and big toe

Question 16

L5

Answer 16

Gluteal, posterior and lateral thigh, lateral aspect of leg, dorsum of foot, medial half of sole, 1st, 2nd, and 3rd digit

Question 17

S1 & S2

Answer 17

Gluteal, posterior thigh and leg

Question 18

S3

Answer 18

Groin, medial thigh to knee

Question 19

S4

Answer 19

Perineum, genitals, and lower sacrum