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Anatomy Sem 2 > Chapter 12 Gimkit > Flashcards

Chapter 12 Gimkit Flashcards

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1
Q

Which of the following provides myelin for axons in the CNS?
- oligodendrocytes
- schwann cells
- microglia
- astrocytes

A

oligodendrocytes

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2
Q

What stage in an action potential immediately follows depolarization

A

repolarization

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3
Q

Bundles of unmyelinated axons, dendrites, and neuron cell bodies are called…

A

gray matter

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4
Q

the brain and spinal cord make up the

A

Central Nervous System

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5
Q

this determines the main effect of a neurotransmitter

A

which receptor and protein channel it attaches to

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6
Q

CNS neuroglia that make myelin sheaths

A

oligodendrocytes

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7
Q

what is the result of excitatory neurotransmission everytime on the postsynaptic membrane?

A

depolarization

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8
Q

PNS neuroglia that make myelin sheaths

A

schwann cells

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9
Q

CNS neuroglia that are phagocytic and protect neurons

A

microglia

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10
Q

the speed of nerve impulse conduction is determined by all of the following EXCEPT
- diameter of the axon
- stimulus strength
- presence of myelin
- absence of myeline

A

stimulus strength

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11
Q

processes that carry impulses to another neuron are

A

axons

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12
Q

neurotransmitters are released from axon terminals by this

A

exocytosis

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13
Q

processes that receive impulses and conduct them toward the cell body are

A

dendrites

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14
Q

conducts impulses from receptors to the CNS

A

sensory neuron

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15
Q

term used to describe a collection of unmyelinated fibers

A

gray matter

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16
Q

an action potential opens these

A

voltage-gated channels

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17
Q

the _____ nervous system contains all the voluntary and involuntary motor neurons going to skeletal muscle

A

somatic

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18
Q

this is the gap between an axon of one neuron and the dendrite of another

A

synaptic cleft

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19
Q

the neuroglial cell involved in the blood brain barrier

A

astrocyte

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20
Q

transmit impulses toward the CNS

A

afferent

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21
Q

this structure restores ions to correct side of membrane while at rest so depolarization can occur

A

sodium-potassium pump

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22
Q

structural classification of neuron with one dendrite and one axon with the soma in between

A

bipolar

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23
Q

this part of the nervous system has effectors in glands, cardiac muscle, and smooth muscle

A

autonomic nervous system

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24
Q

functional neurons where integration of information occurs

A

interneurons

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25
which of the following cells does NOT functionally belong with the others? - sensory neurons - interneurons - motor neurons - oligodendrocytes
oligodendrocytes
26
this part of the nervous system controls the release of adrenaline, increase in muscle strength, and increases in respiration and heart rate
sympathetic division
27
resting membrane potential
-70 mV
28
the membrane returns to resting potential because this ion flows out of the cell
potassium
29
which of the following is an action controlled by the somatic nervous system? - fighting bacteria - digesting - walking - sleeping
walking
30
to generate action potential, this must be reached
threshold
31
chemical synapses work by releasing these
neurotransmitters
32
these functionally are between sensory neurons and motor neurons
interneurons
33
structual type of most motor neurons
multipolar
34
dense collection of myelinated processes in the CNS
white matter
35
neurotransmitter that helps in attention, mood, and appetite
serotonin
36
groups of neuron cell bodies from unipolar neurons in the peripheral nervous system are called
ganglia
37
which neuroglial cell lines the brain and spinal cord cavities to move and secrete cerebrospinal fluid
ependymal cells
38
cocaine has an impact on this neurotransmitter
dopamine
39
the neuroglia that produce myelin in the peripheral nervous system
schwann cells
40
depolarization of a membrane begins with
opening of the sodium channels
41
hyperpolarization charge
-90 mV
42
threshold
-55 mV
43
structural type of most motor neurons
multipolar
44
which of the following is an action controlled by somatic nervous system?
walking
45
neurotransmitter that helps in attention, mood, and appetite
serotonin
46
neurons with a lot of dendrites and one axon
multipolar
47
the _____ nervous system contains all the voluntary and involuntary motor neurons going to skeletal muscle
somatic
48
this determines the main effect of a neurotransmitter
which receptor and protein channel it attaches to
49
which of the following provides myelin for axons in the CNS?
oligodendrocytes
50
these functionally are between sensory neurons and motor neurons
interneurons
51
neurotransmitters are released from the
axon terminal
52
neurons that conduct nerve impulses from the receptors to the Central Nervous System are
sensory neurons
53
ion location when a neuron is polarized
the sodium is outside and the potassium is inside the membrane
54
this structure restores ions to correct side of membrane while at rest so depolarization can occur
sodium-potassium pump
55
the neurotransmitter that acts at the neuromuscular junction
acetylcholine
56
neuroglial cell that produces cerebrospinal fluid
ependymal cell
57
an action potential opens these
voltage-gated channels
58
term used to describe a collection of unmyelinated fibers
gray matter
59
what is the result of inhibitory neurotransmission on the postsynaptic membrane?
hyperpolarization
60
CNS neuroglia that make myelin sheaths
oligodendrocytes
61
for depolarization to occur, this ion flows into the cell
sodium
62
what occurs when calcium ions flow/diffuse into the axon terminal?
synaptic vesicles release neurotransmitters via exocytosis
63
these would be found where saltatory conduction occurs
nodes of Ranvier
64
hyperpolarization charge
-90 mV
65
ther period of time during which the neuron cannot generate another action potential is called
absolute refractory period
66
resting membrane potential
-70 mV

Anatomy Sem 2 (11 decks)

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