Unit 2- Flashcards

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
Q

What increases DA activity

A

Cocaine and meth

25
Q

What disorder is associated with DA

A

Parkinsonism
Schizophrenia
Addictive disorders

26
Q

Norepinephrine

A

Mood and arousal

27
Q

What increases activity of NE

A

Cocaine and math

28
Q

What disorder is associated with NE

A

Depression

29
Q

Serotonin

A

Sleep and wakefulness
Eating
Aggression

30
Q

What drugs affect serotonin

A

Anti-depressants

31
Q

What disorders are associated with serotonin

A

Depression

Eating disorder

32
Q

What are the subdivisions of the peripheral nervous system

A

Somatic and autonomic

33
Q

Somatic nervous system

A

Voluntary skeletal muscles

Sensory receptors

34
Q

Autonomic

A

Involuntary muscles

35
Q

2 branches of autonomic

A

Sympathetic

Parasympathetic

36
Q

Sympathetic

A

Flight

37
Q

Parasympathetic

A

Fight

38
Q

Hindbrain

A

Cerebellum
Medulla
Pons

39
Q

Midbrain

A

Between hindbrain and forebrain

40
Q

Midbrain controls what

A

Sensory
Vision
Hearing

41
Q

Forebrain

A

Largest and most complex region of the brain

42
Q

What is in the hindbrain

A

Thalamus
Hypothalamus
Limbus
And cerebrum

43
Q

Thalamus

A

Sensory

44
Q

Hypothalamus

A

Biological beeds

45
Q

Four Fs

A

Fighting
Fleeing
Feeding
And fornicating

46
Q

Cerebral

Cortex

A

Convoluted outer layer of the cerebrum

47
Q

Corpus callosum

A

Structure that connects the two hemispheres

48
Q

Broca’s area

A

Speech

49
Q

Wernickes

A

Language comprehension

50
Q

Most common form of brain imaging

A

computerize tomography

51
Q

Brain imaging through slices

A

Ct

52
Q

Maps brain function over time;glucose

A

Positive emission tomography

53
Q

Endorphins

A

Resemble opiate drugs

Pain relief

54
Q

Limbic system

A

Center of emotion

55
Q

What is a part of the Limbic system

A

Hypothalamus
Hippocampus
Amygdaloid
Olfactory

56
Q

Hippocampus

A

Learning and memory

57
Q

Amygdala

A

Emotion of dead and aggression

58
Q

Cerebrum

A

Center of complex thought
Sensing, thinking, learning, emotion,
Consciousness and voluntary movement

59
Q

Walter cannon

A

Fight or flight

60
Q

Agonist

A

Chemical that mimics the action of the neurotransmitter

61
Q

Antagonist

A

Opposes neurotransmitter action