Unit 1

Question 1

what are the two structural subdivisions of the nervous system?

Answer 1

CNS and PNS

Question 2

what two structures make up the CNS?

Answer 2

brain

spinal cord

Question 3

what two structures make up the PNS?

Answer 3

cranial nerves

spinal nerves

Question 4

how many cranial nerves are there?

Answer 4

24 nerves/ 12 pairs

Question 5

are the cranial nerves directly or indirectly attached to the brain?

Answer 5

directly

Question 6

what is the term given to the direct attachment of the cranial nerves to the brain?

Answer 6

apparent origin

Question 7

if a cranial nerve has a nucleus of origin, is it motor or sensory?

Answer 7

motor

Question 8

if a cranial nerve is motor, does it have a nucleus/nuclei of origin or termination?

Answer 8

nucleus of origin

Question 9

if a cranial nerve has a nuclei of termination, is it motor or sensory?

Answer 9

sensory

Question 10

if a cranial nerve is sensory, does it have a nucleus/nuclei of origin or termination?

Answer 10

nuclei of termination

Question 11

T/F. since a cranial nerve with a nuclei of termination is in the CNS receiving information, the cell body is also part of the neuron that is carrying the information.

Answer 11

false; the cell body is not part of the neuron that is carrying info

Question 12

the nucleus/nuclei of origin and termination of cranial nerves follow the _______ _______ pathway.

Answer 12

facial pain pathway

Question 13

what type of openings do cranial nerves exit?

Answer 13

patent

Question 14

what does it mean for an opening to be patent?

Answer 14

the opening will not change shape with movement static

Question 15

how many spinal nerves are there?

Answer 15

62 nerves/ 31 pairs

Question 16

T/F. spinal nerves are protected by epineurium which is continuous with dura mater.

Answer 16

true

Question 17

what structure are spinal nerves attached to? how?

Answer 17

spinal cord

ventral (anterior) and dorsal (posterior) rootlets

Question 18

T/F. anterior/posterior rootlets and rami are the same thing.

Answer 18

false

Question 19

what structure does the dorsal root of spinal nerves contain?

Answer 19

dorsal root (spinal) ganglion

Question 20

each spinal nerve will split into what two structures?

Answer 20

ventral (anterior) primary ramus

dorsal (posterior) primary ramus

Question 21

what are the two functional subdivisions of the nervous system?

Answer 21

somatic

visceral

Question 22

what are the two divisions of the somatic nervous system?

Answer 22

sensory (afferent)

motor (efferent)

Question 23

what is main target tissue for the somatic nervous system?

Answer 23

skeletal muscle

Question 24

what are the 3 tissues types that the visceral (autonomic) nervous system controls?

Answer 24

glands
smooth muscle
cardiac muscle

Question 25

what is the main function of the the visceral (autonomic) nervous system?

Answer 25

controls vital body functions

Question 26

what are the two divisions of the visceral (autonomic) nervous system?

Answer 26

sympathetic | parasympathetic

Question 27

the sympathetic division of the visceral (autonomic) nervous system impacts what structures?

Answer 27

``` heart lungs abdominopelvic organs blood vessels arrector pili ```

Question 28

how many efferent neurons of the sympathetic division of the visceral (autonomic) nervous system does it take to reach a target?

Answer 28

2 preganglionic postganglionic

Question 29

sympathetic division matching A. long B. ACH C. short C. norepinephrine 1. preganglionic efferent neuron 2. postganglionic efferent neuron

Answer 29

A. 2 B. 1 C. 1 D. 2

Question 30

the two efferent neurons of the sympathetic division of the visceral (autonomic) nervous system are cholinergic or adrenergic? why?

Answer 30

adrenergic | because the postganglionic efferent neuron will release norepinephrine