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nervous system > NS review > Flashcards

NS review Flashcards

1
Q

a neurotransmitter released in response to the parasympathetic nervous system- puts you into a relaxed state

A

acetylcholine

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2
Q

the brain stem

A

madulla oblorgata

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3
Q

the portion of the brain responsible for maintaining homeostasis within the body

A

hypothalamus

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4
Q

the dorsal root looks different then that ventral root due to the presence of an enlargement called the dorsal root _______

A

ganglion

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5
Q

the void running down the centre of the spinal cord (2 words)

A

central canal

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6
Q

the dorsal root conducts nerve impulses _______ the spinal cord

A

toward

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7
Q

shorter branches of a neuron which receive nerve impulses

A

dendrites

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8
Q

the _______ period occurs when sodium and potassium ions are being returned to their resting potential concentrations

A

refractory

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9
Q

during resting potential, _________ is the most common ion inside the cell

A

potassium

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10
Q

synaptic _______ contain the neurotransmitters within the axon ends

A

vesicles

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11
Q

during resting potential, ________ is the most common on the outside of the cell

A

sodium

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12
Q

the ventral root conducts nerve impulses _____ from the spinal cord

A

away

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13
Q

another word for “sensory” neuron

A

afferent

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14
Q

nerves are bundles of individual cells called ______

A

neurons

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15
Q

one component of CNS

A

brain

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16
Q

the coated portions of the axon are called __________ cells

A

schwann

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17
Q

another word for “motor” neuron

A

efferent

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18
Q

the voltage inside a neuron at resting potential is approximately -

A

70

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19
Q

 axon _________ are at the end of the axon

A

 terminals

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20
Q

The three protective membranes around the spinal cord

A

meninges

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21
Q

The space between the axon ends of one nerve cell and the dendrites of a neighbouring cell

A

synapse

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22
Q

The portion of the nervous system which produces the “fight or flight” response

A

sympathetic

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23
Q

the nodes of ______ are breaks between myelinated sections of the axon

A

ranvier

24
Q

The portion of the cerebrum responsible for thinking

A

frontal

25
Q

The portion of the cerebrum responsible for vision

A

occipital

26
Q

A chemical that is released to transmit a nerve impulse from one nerve cell to the next

A

neurotransmitter

27
Q

The portion of the nervous system which is “involuntary “ (not under the conscious control)

A

autonomic

28
Q

after an action potential, sodium and potassium return to their resting potential state by the process of ________ (2 words)

A

active transport

29
Q

The central part of the neuron, where most activities related to the maintenance of the cell occur

A

cell body

30
Q

___________ transmitters make the postsynaptic membrane more permeable to Na+ and therefore more likely to produce an action potential

A

excitatory

31
Q

The stage of action potential where sodium ions begin to move into the cell

A

depolarization

32
Q

A neurotransmitter released by the sympathetic nervous system to induce the fight or flight response

A

noradrenalin

33
Q

_______ neurons carry nerve impulses AWAY from the CNS

A

motor

34
Q

A type of neuron found only in the CNS

A

interneurons

35
Q

The portion of the cerebrum responsible for understanding speech

A

temporal

36
Q

The portion of the nervous system which puts you into a more relaxed

A

parasympathetic

37
Q

The stage of action potential of where potassium ions begin to move out of the cell

A

Repolarization

38
Q

The name given to the “nerve impulse” that passes along a neuron (2 words)

A

action potential

39
Q

the ________ nervous system contains all the nerves that effect the skeletal muscle

A

somatic

40
Q

portion of the nervous system that is not the CNN

A

 PNS

41
Q

The portion of the brain that receives all information from the senses (except for smell) and decides where to direct it

A

thalamus

42
Q

an involuntary response which bypasses the brain

A

 reflex

43
Q

A substance which coats the axons of the nerve cells

A

myelin

44
Q

The part of the brain responsible for conscious thought

A

cerebrum

45
Q

The “master glands”

A

pituitary

46
Q

___________ transmitters occurs because of the myelinated nature of the act

A

saltatory

47
Q

these substances break down neurotransmitters in the synaptic cleft after their release

A

enzymes

48
Q

The part of the brain responsible for balance 

A

cerebellum

49
Q

A horizontal section that connects the right and left hemispheres of the brain

A

corpus callosum

50
Q

_________ transmitters make the postsynaptic membrane less permeable to an Na+ and therefore less likely to produce an action potential

A

inhibitory

51
Q

a component of the CNS

A

spinal cord

52
Q

The lobe of the cerebrum responsible for hearing and smelling

A

temporal

53
Q

______ matter in the spinal cord contains mostly cell bodies

A

grey

54
Q

________ matter in the spinal cord contains bundles of myelinated axons

A

white

55
Q

there are 31 pairs of ______ nerves

A

spinal

56
Q

The sodium/potassium pump requires energy molecule

A

ATP

nervous system (1 decks)

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