Unit 2- Flashcards

(62 cards)

0
Q

Depolarizations

A

Negative to positive voltage shift

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1
Q

What is the charge of the neuron at resting potential

A

Negative

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2
Q

Action potential

A

Shift change

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3
Q

Absolute refractory period

A

The period immediately following the firing of a nerve fiver when it cannot be stimulated no matter how great a stimulus is applied

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4
Q

Relative refractory period

A

Period shortly after the firing of a nerve fiver when partial depolarization has occurred and a greater than normal stimulus can create a second impulse

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5
Q

All or non law

A

The strength of a response of a nerve cell is not dependent upon the strength of a stimulus

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6
Q

Synaptic pruning

A

Making room for new connections

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7
Q

Soma

A

Cell body

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8
Q

Dendrites

A

Receiver

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9
Q

Axon

A

Transmitter

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10
Q

Myelin sheath

A

Insulter

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11
Q

Terminal buttons

A

Storage

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12
Q

Neurotransmitter

A

Terminal buttons

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13
Q

Synapse

A

Junction

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14
Q

Glia

A

Glue of neuron

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15
Q

Medulla

A

Attaches to spinal cord

Unconscious function and control

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16
Q

“The bridge”

A

Pons

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17
Q

Pons

A

Fibers that connect brainstem to cerebellum

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18
Q

What does the pons control

A

Sleep
Arousal
Breathing

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19
Q

Cerebellum

A

“Little brain”

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20
Q

Acetylcholine

A

Skeletal muscles
Attention
Arousal
Memory

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21
Q

What is ach stimulated by

A

Nicotine

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22
Q

What is associated with ACh

A

Alzheimer’s

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23
Q

Dopamine

A

Voluntary movement

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24
What increases DA activity
Cocaine and meth
25
What disorder is associated with DA
Parkinsonism Schizophrenia Addictive disorders
26
Norepinephrine
Mood and arousal
27
What increases activity of NE
Cocaine and math
28
What disorder is associated with NE
Depression
29
Serotonin
Sleep and wakefulness Eating Aggression
30
What drugs affect serotonin
Anti-depressants
31
What disorders are associated with serotonin
Depression | Eating disorder
32
What are the subdivisions of the peripheral nervous system
Somatic and autonomic
33
Somatic nervous system
Voluntary skeletal muscles | Sensory receptors
34
Autonomic
Involuntary muscles
35
2 branches of autonomic
Sympathetic | Parasympathetic
36
Sympathetic
Flight
37
Parasympathetic
Fight
38
Hindbrain
Cerebellum Medulla Pons
39
Midbrain
Between hindbrain and forebrain
40
Midbrain controls what
Sensory Vision Hearing
41
Forebrain
Largest and most complex region of the brain
42
What is in the hindbrain
Thalamus Hypothalamus Limbus And cerebrum
43
Thalamus
Sensory
44
Hypothalamus
Biological beeds
45
Four Fs
Fighting Fleeing Feeding And fornicating
46
Cerebral | Cortex
Convoluted outer layer of the cerebrum
47
Corpus callosum
Structure that connects the two hemispheres
48
Broca's area
Speech
49
Wernickes
Language comprehension
50
Most common form of brain imaging
computerize tomography
51
Brain imaging through slices
Ct
52
Maps brain function over time;glucose
Positive emission tomography
53
Endorphins
Resemble opiate drugs | Pain relief
54
Limbic system
Center of emotion
55
What is a part of the Limbic system
Hypothalamus Hippocampus Amygdaloid Olfactory
56
Hippocampus
Learning and memory
57
Amygdala
Emotion of dead and aggression
58
Cerebrum
Center of complex thought Sensing, thinking, learning, emotion, Consciousness and voluntary movement
59
Walter cannon
Fight or flight
60
Agonist
Chemical that mimics the action of the neurotransmitter
61
Antagonist
Opposes neurotransmitter action