dermatomes

Question 1

how many nerves in each spinal segment?

Answer 1

8 cervical
12 thoracic
5 lumbar
5 sacral
1 coccygeal

Question 2

C1

Answer 2

vertex of skull

Question 3

C2

Answer 3

temple, forehead, occiput

Question 4

C3

Answer 4

entire neck, post cheek, temporal area, prolongation forward under mandible

Question 5

C4

Answer 5

shoulder area, clavicular area, upper scap area

Question 6

C5

Answer 6

deltoid area, ant aspect of upper arm to base of thumb

Question 7

C6

Answer 7

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

Question 8

C7

Answer 8

lateral arm and forearm to index, long and ring fingers

Question 9

C8

Answer 9

medial arm and forearm to long, ring, and little fingers

Question 10

T1

Answer 10

medial side of forearm to base of little finger

Question 11

T2

Answer 11

medial side of upper arm to medial elbow, pec and midscap areas

Question 12

t3-6

Answer 12

upper thorax

Question 13

t5-t7

Answer 13

costal margin

Question 14

t8-12

Answer 14

abdomen and lumbar region

Question 15

L1

Answer 15

back, over trochanter and groin

Question 16

L2

Answer 16

back, front of thigh to knee

Question 17

L3

Answer 17

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

Question 18

L4

Answer 18

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

Question 19

L5

Answer 19

butt, post and lateral thigh, lateral aspect of leg, dorsum of foot, medial half of sole, first, second and third toes

Question 20

S1,S2

Answer 20

butt, thigh, post leg

Question 21

S3

Answer 21

groin, medial thigh to knee

Question 22

S4

Answer 22

peroneum, genitals, lower sacrum