Nervous System

Question 1

Nervous Systems splits into

Answer 1

Central Nervous System CNS

Peripheral Nervous System PNS

Question 2

CNS contains

Answer 2

Brain

Spinal Cord

Question 3

PNS contains

Answer 3

Somatic

Autonomic

Question 4

Somatic is:

Answer 4

voluntary
motor input to skeletal muslces
sensory input from skin, joints, and muscles to CNS

Question 5

autonomic splits into:

Answer 5

Sympathetic

parasympathetic

Question 5

Autonomic is:

Answer 5

involunatry

motor and sensory input to and from smooth muscle, cardia muscles, and glands

Question 6

sympathetic is

Answer 6

thoracolumnar division

Question 7

parasympathetic is:

Answer 7

craniosacral division

Question 8

How many pairs of spinal nerves?
Originate?
Exit?

Answer 8

31 pairs
originate from spinal cord and
exit via intervertebral foramen

Question 9

How many cranial nerves?
Originate?
Exit?

Answer 9

12 pairs
from nuclei in the brain or neurons situated outside the brain
exit the cranial cavity via foramen

Question 10

Cervical Vertebrae?

Answer 10

C1-C7

Question 11

C1 exits?

C2 exits?

Answer 11

above C1

below C1

Question 12

C7 exits?

C8 exits?

Answer 12

above C7

below C7

Question 13

Thoracic vertebrae?

Answer 13

T1-T12

Question 14

Lumbar Vertebrae?

Answer 14

L1-L5

Question 15

Sacrum vertebrae?

Answer 15

S1-S5

Question 16

efferent neurons

Answer 16

nerve cells that carry information from the spinal cord

Question 17

their cell bodies reside in the ?

Answer 17

ventral horn of the spinal cord

Question 18

Efferent axons are conveyed from the ventral horn by way of ?

Answer 18

ventral root of the spinal nerve

Question 19

afferent neurons

Answer 19

nerve cells that carry information toward the spinal cord

Question 20

their cell bodies reside in?

Answer 20

DRG

dorsal root ganglion of the spinal cord

Question 21

Afferent axons are conveyed form the DRG to the ?

Answer 21

dorsal horn by way of the dorsal root

Question 22

Ventral and dorsal roots do what?

Answer 22

meet as they exit the intervertebral foramen IVF

Question 23

spinal nerve or mixed spinal nerve

Answer 23

carries both efferent and afferent fibers

Question 24

Spinal nerve splits into:

Answer 24

primary ventral ramus

primary dorsal ramus

Question 25

ventral and dorsal ramus convey

Answer 25

both afferent and efferent fibers

Question 26

Dorsal rami distribute ONLY to:

Answer 26

deep intrinsic back muscles
deep muscles of posterior neck
skin from poster scalp down to the buttocks

Question 27

Ventral rami distribute to:

Answer 27

anterior/lateral head and neck
anterior/lateral thorax and abdomen
pelvis and perineum
limbs

Question 28

cutaneous nerves convey:

Answer 28

sensory information from the skin to the CNS

Question 29

dermatome

Answer 29

the dorsal root of a single spinal nerve

Question 30

what supplies a dermatome

Answer 30

only a single spinal nerve

Question 31

one spinal cord level can contribute to:

Answer 31

multiple names peripheral nerves

Question 32

see dermatome map

Answer 32

see dermatome map