Test 3 Flashcards

1
Q

What is React

A

Sending out motor commands

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2
Q

What Processes information

A

Inter neurons

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3
Q

What are Neurons purpose

A

Send and receive signals

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4
Q

Neuroglia is defined as?

A

Cells that support

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5
Q

What is included in the Central nervous system

A

Brain spinal cord

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6
Q

What is included in the Peripheral nervous system

A

Sensory, nerves
Afferent division- sensory info., begins with receptors
Efferent division- motor info., terminates with effectors

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7
Q

Enteric nervous system includes?

A

Digestive system

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8
Q

Somatic nervous system includes?

A

Skeletal muscle

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9
Q

Autonomic nervous system is identified as?

And includes two effects

A

In charge of sending things that we don’t have control of.
Sympathetic- stimulating effect
Parasympathetic- relaxing effect

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10
Q

Axon is defined as?

A

Connector tubes on a cell that sends and delivers messages

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11
Q

Telodendria is defined as?

A

Synaptic terminals

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12
Q

Nissl bodies is defined as?

A

Concentration of ribosomes, gray matter

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13
Q

Dendrites purpose is to?

A

Receive information from other neurons

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14
Q

What are Inter neurons involved in?

A

Involved in higher functions

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15
Q

Unipolar is defined as?

A

Only acts as sensory neurons

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16
Q

Glial cells

A

Supporting cells that make up half the volume of the nervous system

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17
Q

Astrocytes

A

Maintain blood-brain barrier

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18
Q

Oligodendrocytes

A

Myelinate CNS axons

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19
Q

Microglia

A

Removes cell debris by phagocytosis

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20
Q

Ependymal cells

A

Line ventricles, produce and regulate CSF

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21
Q

Myelin

A

Speeds up action potential

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22
Q

Satellite cells

A

Maintenance

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23
Q

Schwann cells

A

Form myelin sheaths around peripheral axons

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24
Q

Graded potential

A

Temporary localized stimulus

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25
Q

Action potential

A

An electrical signal

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26
Q

Threshold

A

Value at which action potential is sent

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27
Q

Propagation

A

Action potential moving down the cell

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28
Q

Depolarization

A

Extreme positive

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29
Q

Repolarization

A

Extreme negative

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30
Q

Continuous propagation

A

Continuous, sense there is no myelin

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31
Q

Saltatory propagation

A

Jumps from node to node

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32
Q

Area of polarity reversal

A

Nodes that jump from myelin sheath

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33
Q

Presynaptic cell

A

Neurons that sends messages

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34
Q

Postsynaptic cell

A

Cell that receives message

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35
Q

Chemical synapse

A

Neurotransmitters are released across the cleft

Are not directly connected

36
Q

Electrical synapse

A

Connected

Cells that are joined for ions to pass from one cell to another

37
Q

Four parts of the Central nervous system

A

Cerebrum
Diencephalon
Brain stem
Cerebellum

38
Q

Cerebrum

A

Coordination
Emotion
Memory

39
Q

Gyri (type of grey matter)

A

Ridge

40
Q

Sulci (type of gray matter)

A

Dip

41
Q

Parietal lobe

A

Somatosensation

42
Q

Somatosensation

A

Sensory info coming from body

43
Q

Proprioception

A

Knowing where body parts are in 3D form

44
Q

Occipital lobe

A

Primary visual cortex

45
Q

Temporal lobe

A

Processes smell and hearing

46
Q

Frontal lobe

A

Motor cortex

47
Q

Precentral gyrus

A

Most motor stuff comes from here

48
Q

Premotor area

A

Thinking about movements to be made

49
Q

Frontal eye field

A

Controls eye movements

50
Q

Broca’s area

A

Controls movements for speech

51
Q

Visual association area

A

Interprets activity and visual cortex

52
Q

Auditory association area

A

Interprets activity and auditory cortex

53
Q

Somatic sensory association area

A

Interprets activity in primary sensory cortex

54
Q

Somatic motor association area

A

Coordinates motor responses of learned movements

55
Q

Basal forebrain

A

Acetylcholine production for the brain

56
Q

Basal nuclei

A

Control general body movements

57
Q

Pineal gland

A

Regulates sleep wake cycle’s

58
Q

Thalamus

A

Relay hub, processes info going in and out

59
Q

Hypothalamus

A

Gate keeper of homeostasis

60
Q

Midbrain

A

Coordinate sensory information

61
Q

Superior colliculi

A

Visual information

62
Q

Interior colliculi

A

Auditory information

63
Q

Pons

A

Motor commands

64
Q

Medulla

A

Regulates autonomic functions

65
Q

Cerebellum

A

Adjusts postural muscles of the body

66
Q

Alpha waves

A

Relaxed

67
Q

Beta waves

A

Concentrating

68
Q

Theta waves

A

Seen in children and in intensely frustrated adults

69
Q

Delta waves

A

Large amplitude, low frequency waves

70
Q

White matter

A

Myelinated axon’s

71
Q

Gray matter

A

Contains cell bodies mainly

72
Q

Ascending tracts

A

Sensory

73
Q

Descending tracts

A

Motor

74
Q

Four spinal nerves

A

Cervical, brachial, lumbar, sacral

75
Q

Name the two spinal nerve roots

A

Ventral, dorsal

76
Q

What are the three connective tissue layers of the spinal nerve

A

Epineurium
Perineurium
Endoneurium

77
Q

Epineurium

A

Outer layer of tissue on the spinal nerve

78
Q

Perineurium

A

Middle layer of tissue on the spinal nerve

79
Q

Endoneurium

A

Inner layer of tissue on the spinal nerve

80
Q

First order neuron

A

Sensory neuron delivers sensations to the CNS

81
Q

Second order neuron

A

Axon of the sensory neuron synapses on an interneuron in the CNS

82
Q

Third order neuron

A

Gets it to the consciousness

83
Q

Posterior column pathway

A

Fine touch

84
Q

Spinocerebellar pathway

A

Proprioception

85
Q

Corticospinal pathway

A

Voluntary control

86
Q

Medial pathway

A

Control of muscle tone and gross movements

87
Q

Lateral pathway

A

Control of muscle tone and precise movements