Dermatomes

Question 1

C2

Answer 1

Occipital protuberance

Question 2

C3

Answer 2

Supraclavicular fossa

Question 3

C4

Answer 3

Top of the acromioclavicular joint

Question 4

C5

Answer 4

lateral side of antecubital fossa

Question 5

C6

Answer 5

Thumb

Question 6

C7

Answer 6

Middle finger

Question 7

C8

Answer 7

Little finger

Question 8

T1

Answer 8

Medial side of antecubital fossa

Question 9

T2

Answer 9

Apex of axilla

Question 10

T3

Answer 10

3rd intercostal space

Question 11

T4

Answer 11

4th intercostal space

Question 12

T5

Answer 12

5th intercostal space (midway between T4 and T6)

Question 13

T6

Answer 13

6th intercostal space at the level of the xiphisternum

Question 14

T7

Answer 14

7th intercostal space (midway between T6 and T8)

Question 15

T8

Answer 15

8th intercostal space (midway btw T6 and T10)

Question 16

T9

Answer 16

9th intercostal space (midway btw T8 and T10)

Question 17

T10

Answer 17

Umbilicus or 10th intercostal space

Question 18

T11

Answer 18

11th intercostal space

Question 19

T12

Answer 19

Midpoint of the inguinal ligament

Question 20

L1

Answer 20

Half the distance between T12 and L2

Question 21

L2

Answer 21

Midanterior thigh

Question 22

L3

Answer 22

Medial femoral condyle

Question 23

L4

Answer 23

Medial malleolus

Question 24

L5

Answer 24

Dorsum of the foot at third metatarsophalangeal joint

Question 25

S1

Answer 25

Lateral heel

Question 26

S2

Answer 26

Popliteal fossa in the midline

Question 27

S3

Answer 27

Ischial tuberosity

Question 28

S4-5

Answer 28

Perianal area (taken as 1 level)