Unit 1: Review

Question 1

CNS parts

Answer 1

Brain

Cord

Question 2

PNS parts

Answer 2

Cranial nerves (12 pair)
Spinal nerves (31 pair)

Question 3

cranial nerve types with nuclei of origin

Answer 3

motor

mixed

Question 4

cranial nerve types with nucleus of termination

Answer 4

sensory

Question 5

spinal nerves are attached to the spinal cord via

Answer 5

ventral & dorsal ROOTLETS

Question 6

what is contained in the dorsal root of a spinal nerve

Answer 6

dorsal root ganglion

Question 7

each spinal nerve splits into

Answer 7

ventral & dorsal primary rami

Question 8

functional subdivisions of the nervous system

Answer 8

somatic
autonomic (visceral)

Question 9

two nerve types found in somatic NS

Answer 9

sensory (afferent)

motor (efferent)

Question 10

two divisions of autonomic NS

Answer 10

sympathetic

parasympathetic

Question 11

describe the TWO efferent neurons used to reach the target in the sympathetic division of the ANS

Answer 11

preganglionic: SHORT, rel. ACH
postganglionic: LONG, rel. NE

Question 12

which splanchnic nerves are found in the sympathetic NS

Answer 12

sacral

Question 13

describe the TWO efferent neurons used to reach target in parasympathetic division of ANS

Answer 13

preganglionic: LONG, rel ACH
postganglionic: SHORT, rel ACH

Question 14

which splanchnic nerves are found in the parasympathetic NS

Answer 14

pelvic

Question 15

in the sympathetic division, neurons synapse close to the ____, where in the parasympathetic division they synapse close to the ____

Answer 15

CNS

target

Question 16

CN I (name & type)

Answer 16

olfactory

special sensory

Question 17

CN II

Answer 17

optic

special sensory

Question 18

CN III

Answer 18

oculomotor
motor
-parasympathetic & somatic

Question 19

CN IV

Answer 19

trochlear
somatic motor
-superior oblique

Question 20

CN V

Answer 20

trigeminal
mixed
-somatic motor & sensory
-muscles of mastication

Question 21

great sensory nerve of face, is the largest

Answer 21

trigeminal

Question 22

CN VI

Answer 22

abducens
somatic motor
lateral rectus

Question 23

CN VII

Answer 23

facial
mixed
-motor: somatic, parasympathetic
-sensory: somatic, special

Question 24

facial nerve (CN VII) carries taste info from where

Answer 24

anterior 2/3 of tongue

Question 25

facial expression muscles (2) supplied by facial nerve, and 2 glands

Answer 25

stylohyoid stapedius lacrimal gland salivary gland

Question 26

CN VIII

Answer 26

vestibulocochlear special sensory -cochlea & vestibule -hearing & equilibrium

Question 27

CN IX

Answer 27

glossopharyngeal mixed -motor: somatic & *parasympathetic* -sensory: somatic & special

Question 28

taste info carried by glossopharyngeal nerve is from where

Answer 28

posterior 1/3 of the tongue

Question 29

CN X

Answer 29

``` vagus mixed -motor: somatic & *parasympathetic* -sensory: somatic -longest CN ```

Question 30

CN XI

Answer 30

accessory motor -cranial part: pharynx, larynx, palate -spinal part: traps, SCM

Question 31

CN XII

Answer 31

hypoglossal motor -ex/intrinsic tongue muscles

Question 32

two neurons involved in somatic motor pathway

Answer 32

upper motor neuron | lower motor neuron

Question 33

UMN that initiates voluntary movement

Answer 33

pyramidal

Question 34

location of pyramidal cell body

Answer 34

cerebral cortex

Question 35

UMN that works to coordinate movement, but does not initiate

Answer 35

extrapyramidal

Question 36

location of extrapyramidal cell body

Answer 36

brainstem

Question 37

after crossing in the pyramids, where do most UMN descend

Answer 37

lateral corticospinal tract

Question 38

location that UMN synapse in gray matter

Answer 38

anterior horn (rexed lamina VII)

Question 39

LMN pathways extend into ___

Answer 39

PNS

Question 40

before being carried to supply somatic muscles, LMN exit the cord via

Answer 40

anterior rootlets

Question 41

describe the three neuron somatic sensory pathway (from receptor to cortex)

Answer 41

1) receptor-> CNS 2) CNS-> opposite thalamus 3) thalamus-> cortex

Question 42

PRIMARY sensory neuron CB are located in ___ & convey info from a receptor to ____

Answer 42

dorsal root ganglion | CNS

Question 43

SECONDARY sensory neurons ___ & convey info to the ____

Answer 43

decussate (cross over) | thalamus (on opposite side)

Question 44

TERTIARY sensory neurons relay info to ____, in order to integrate sensory info

Answer 44

cerebral cortex