Nervous System Flashcards

1
Q

includes the brain, spinal cord, and receptors in the sense organs

A

Neural tissue

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2
Q

the functional unit of the brain, transmits electrical impulses

A

Neurons

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3
Q

supporting cells that separate, protect, give structure, and are phagocytic

A

Neuroglia

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4
Q

What are the two divisions of the nervous system?

A

1) central nervous system

2) peripheral nervous system

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5
Q

What does the CNS do/control?

A

1) relays info
2) processes info
3) analyzes info

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6
Q

What does the PNS do/control?

A

1) receives info from the environment

2) relays commands from the brain

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7
Q

What is the CNS made up of?

A

brain and spinal cord

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8
Q

What is the PNS made up of?

A

cranial and spinal nerves

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9
Q

what controls voluntary actions?

A

Somatic nervous system

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10
Q

What controls the involuntary actions?

A

Autonomic nervous system

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11
Q

What are the two branches of the autonomic nervous system?

A

1) Sympathetic

2) parasympathetic

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12
Q

What does the sympathetic nervous system do to your metabolism?

A

Speeds it up

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13
Q

What does the parasympathetic nervous system do to your metabolism?

A

Slows it down

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14
Q

part of the neuron, contains the nucleus and the cytoplasm

A

Cell Body

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15
Q

part of the neuron, the end of the neuron that connects to other cells

A

Dendrites

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16
Q

part of the neuron, long fiber that connects the cell body to the terminal end

A

Axon

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17
Q

part of the neuron, area where 2 neurons meet (gap)

A

Synapse

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18
Q

chemicals that allow communications between two nerves

A

neurotransmitters

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19
Q

area where nerve connects to muscle

A

neuromuscular junction

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20
Q

area where nerve connects to muscle and glands connect

A

Neuroglandular Junction

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21
Q

What are the three types of neurons?

A

1) sensory
2) motor
3) interneurons

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22
Q

type of neuron, connected to sense organs

A

sensory

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23
Q

type of neuron, connect to muscles

A

Motor

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24
Q

type of neuron, connects one neuron together

A

Interneurons

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25
Q

3 protective layers that surround the brain and spinal cord

A

spinal meninges

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26
Q

fluid surrounding the brain and spinal cord

A

cerebrospinal fluid

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27
Q

What are the three layers of the spinal meninges?

A

1) Dura mater
2) Arachnoid
3) Pia mater

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28
Q

layer of the spinal meninges, outer protective layer

A

Dura mater

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29
Q

layer of the spinal meninges, separates dura mater and the brain, looks like a spider web

A

Arachnoid

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30
Q

layer of the spinal meninges, directly covers the brain

A

Pia mater

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31
Q

made up of 100 billion neurons, 3 pounds

A

Brain

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32
Q

part of the brain, upper portion of the brain, 2 halves, largest part

A

Cerebrum

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33
Q

What are the 4 parts of the cerebrum?

A

1) Frontal
2) Parietal
3) Temporal
4) Occipital

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34
Q

What does the frontal lobe control?

A

memory and thought

35
Q

What does the parietal lobe control?

A

sense of touch

36
Q

What does the temporal lobe control?

A

hearing

37
Q

What does the occipital lobe control?

A

Sight

38
Q

coordinates and controls balance in the body parts you can control

A

Cerebellum

39
Q

connects the brain stem to the cerebrum, regulates incoming stimulants

A

Thalamus

40
Q

controls hunger, thirst, temperature, and anger

A

Hypothalamus

41
Q

What do the pons and medulla oblongata control?

A

1) breathing
2) heart rate
3) swallowing
4) blood pressure

42
Q

Where is the pons located?

A

in the front of the brain

43
Q

Where is the medulla oblongata located?

A

in the back of the brain

44
Q

connects the 2 lobes of the brain and exchanges info from side to side

A

Corpus Collosum

45
Q

link between the brain and the body

A

spinal cord

46
Q

bundle of neurons connected together

A

Nerves

47
Q

the amount of energy needed to activate a neuron

A

threshold stimulus

48
Q

impulse that goes to the spinal cord and directly back to the body, does not go to the brain

A

reflex

49
Q

react to stimuli (ex- light, touch, smell, taste)

A

sensory receptors

50
Q

What are the five types of receptors?

A

1) pain- damaged cells
2) thermoreceptors- temperature
3) mechanoreceptors- sound, touch, motion, pressure
4) chemoreceptors- chemicals
5) photoreceptors- light

51
Q

window to the eye, clear front covering

A

cornea

52
Q

fluid in front chamber of the eye

A

Aqueous humor

53
Q

colored part of the eye

A

iris

54
Q

opening in the iris that allows light to get to the retina

A

pupil

55
Q

focuses the light onto the retina

A

lens

56
Q

fluid in the back of the eye

A

vitreous humor

57
Q

area of nerve cells on the back of the eye

A

retina

58
Q

light sensitive in the retina

A

rods

59
Q

color sensitive in the retina

A

cones

60
Q

white part of the eye, blood vessels are here

A

Sclera

61
Q

connects the eye to the occipital lobe of the brain

A

optic nerve

62
Q

What are the two functions of the ears?

A

1) hearing

2) balance

63
Q

ear canal

A

auditory canal

64
Q

ear drum

A

tympanum

65
Q

What are the three ear bones?

A

1) hammer
2) anvil
3) stirrup

66
Q

connects stirrup to the cochlea and transmits vibrations

A

oval window

67
Q

fluid filled chamber with hairs in it that sense vibration and pass information to the cochlear nerve

A

Cochlea

68
Q

is controlled by the semicircular canals in the ear, fluid filled chambers that detect where a persons body position is

A

Balance

69
Q

what controls the sense of smell in the nose?

A

chemoreceptors

70
Q

What controls the sense of taste?

A

the sense of smell

71
Q

What 4 flavors do taste buds determine?

A

1) salty
2) sweet
3) bitter
4) sour

72
Q

a disease of the brain that causes memory loss

A

Alzheimer’s

73
Q

lose ability to speak

A

aphasia

74
Q

inability to focus

A

Attention deficit disorder

75
Q

hyperfocus

A

autism

76
Q

temporary paralysis of the face

A

bells palsy

77
Q

brain damage due to lack of oxygen

A

cerebral palsy

78
Q

pryon- causes brain to turn into swiss cheese

A

Cruetzfeldt Jakob Disease

79
Q

swelling of the brain

A

Encephalitis

80
Q

repeated seizures

A

Epilepsy

81
Q

genetic, progressive, loss of cognitive and behavioral and physical function

A

Huntington’s disease

82
Q

cerebral spinal fluid gets too big

A

hydrocephalus

83
Q

decrease in dopamine in the brain, causes tremors

A

Parkinson’s disease

84
Q

involuntary actions, typically outbursts

A

Tourettes