neuro ap

Question 1

the all or nothing principle means

Answer 1

an entire neuron depolarizes to its maximum strength

Question 2

the fight or flight response is a specific function of the

Answer 2

sympathetic nervous system

Question 3

white matter is made up of

Answer 3

myelinated axons

Question 4

in a healthy animal, if you shine a light in one eye what should happen

Answer 4

the pupils of both eyes should constrict

Question 5

the ___ is the hole that runs through the spinal canal and it is where CSF is found

Answer 5

central canal

Question 6

___ is the neurotransmitter for the PNS

Answer 6

acetylcholine

Question 7

somatic reflexes involve _____

Answer 7

contraction of muscle

Question 8

there are _____ cranial nerves which originate from the ____. cranial nerve ___ is known as vagus nerve

Answer 8

24, brainstem, x

Question 9

____ break down most of the neurotransmitters

Answer 9

enzymes

Question 10

the ___ is the space between a target cell and a neuron

Answer 10

synapse

Question 11

neurons receive impulse at the ____ and send impulses from the

Answer 11

dendrite ; axon

Question 12

afferent nerve fibers carry impulses ___ the CNS

Answer 12

toward

Question 13

_____ are what composes white matter

Answer 13

myelinated axons

Question 14

the ___ is the tough fibrous outer layer of the meninges. another name for this is

Answer 14

dura mater, tough mother

Question 15

the ___ is the connective tissue that lays directly on the surface of the brain and spinal cord

Answer 15

pia mater

Question 16

gray matter is found in the ___ and ____

Answer 16

cerebrum and cerebellum

Question 17

the ____ is the portion of the brain that has control of the endocrine system

Answer 17

hypothalamus

Question 18

the ___ is where the spinal cord exits the skull

Answer 18

brain stem

Question 19

the ___ is the largest portion of the brain

Answer 19

cerebrum

Question 20

the ____,_____, and ____ make up the brain stem

Answer 20

medulla oblongata, pons, midbrain

Question 21

this coordinates balance and posture

Answer 21

cerebellum

Question 22

this receives and interprets sensory information

Answer 22

cerebrum

Question 23

this performs autonomic nervous function

Answer 23

brainstem

Question 24

this coordinates complex reflexes

Answer 24

cerebellum

Question 25

this area is where the cranial nerves originate

Answer 25

brainstem

Question 26

this is where the conscious mind resides

Answer 26

cerebrum

Question 27

this is where learning and intelligence resides

Answer 27

cerebrum

Question 28

this serves as a passageway between the brainstem and cerebrum

Answer 28

dicencephalon

Question 29

what is the blood brain barrier

Answer 29

keeps many drugs from readily passing from the blood into the brain

Question 30

what are the inhibitory neurotransmitters

Answer 30

GABA, Acetylcholine, glycine

Question 31

what are the excitatory neurotransmitters

Answer 31

norepi, epi, dopamine, acetylcholine

Question 32

what is the refractory period

Answer 32

a neuron that has generated a nerve impulse cannot generate another

Question 33

what is the all or nothing principle

Answer 33

an entire neuron depolarizes to its max strength

Question 34

what are the nodes of ranvier and what is their purpose

Answer 34

gaps in the myelin, enhance speed of conduction of impulses?

Question 35

what are schwann cells

Answer 35

in the PNS, make myelin, help during damage of neurons

Question 36

what are the 4 lobes of the cerebrum

Answer 36

frontal, parietal, temporal, occipital

Question 37

why does the brain have a wrinkled appearance

Answer 37

gyri - folds of brain tissue, sulci - shallow grooves, fissures - deep grooves, increases the surface area of the brain, makes more room for gray matter

Question 38

a terminal bouton is found

Answer 38

at the end of the telodendron