Dermatomes and Myotomes

Question 1

How many pairs of nerves exit off spinal cord?

Answer 1

31 pairs

Question 2

True or False. Spinal nerves are ipsilateral?

Answer 2

True

Question 3

Posterior/dorsal root carries what kind of information? Where?

Answer 3

sensory/afferent
into CNS, ascends from cord to reach cortex

Question 4

Ventral/anterior root carries what kind of information? Where?

Answer 4

motor/efferent
Out of CNS, descends from the cortex to the cord

Question 5

Ventral/dorsal roots come together to form what in the intervertebral foramen?

Answer 5

spinal nerves

Question 6

Cervical

Answer 6

C1-C8

Question 7

Thoracic

Answer 7

T1-T12

Question 8

Lumbar

Answer 8

L1-L5

Question 9

Sacral

Answer 9

S1-S5

Question 10

Coccygeal

Answer 10

C0

Question 11

C5

Answer 11

D: Skin over deltoid
M: deltoid

Question 12

C6

Answer 12

D: ant. skin of thumb
M: biceps

Question 13

C7

Answer 13

D: Ant skin dig. 2 & 3
M: triceps

Question 14

C8

Answer 14

D: digs. 4 & 5
M: finger flexion
Double fist

Question 15

T1

Answer 15

D: ant./med. elbow
M: finger abduction

Question 16

Flexion of elbow

Answer 16

C5, C6

Question 17

Extension of elbow

Answer 17

C6, C7, C8

Question 18

Abduction of arm

Answer 18

C5

Question 19

Flexion of digits

Answer 19

C8

Question 20

add/abd of digits

Answer 20

T1