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Psych > brain part 1 > Flashcards

brain part 1 Flashcards

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1
Q

Motor neuron

A

Causes things to move (out)

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2
Q

Dendrite

A

Receive messages from other cells

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3
Q

Action potential

A

The firing of a neuron (all or nothing)

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4
Q

Ions

A

An atom or group of atoms in which a number of electrons is different from the number of protons

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5
Q

Serotonin

A

A neurotransmitter associated with mood
-Stops reuptake

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6
Q

Reuptake

A

When a neurotransmitter gets reabsorbed back to a neuron

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7
Q

Somatic nervous system

A

Part of the nervous system that controls voluntary movement

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8
Q

autonomic nervous system

A

automatic/involuntary movements
-ex. heart beat or breathing 

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9
Q

sympathetic

A

Adrenaline/fight or flight also being nervous

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10
Q

Parasympathetic nervous system

A

When you’re calm

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11
Q

Pituitary gland

A

Send hormones to other glands

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12
Q

Endocrine system

A

governs behavior (Takes a longer time)

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13
Q

Pancreas

A

Regulates the level of Sugar in blood

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14
Q

Thyroid

A

Controls metabolism 

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15
Q

Metabolism

A

How efficiently you use energy

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16
Q

Parathyroid

A

Controls calcium and body

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17
Q

Gonads

A

testes/ovaries
-Release testosterone and estrogen

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18
Q

Adrenal glands

A

release epinephrine, cortisol, norepinephrine
-Triggers fight or flight

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19
Q

Interneurons

A

Connect motor and sensory neuron

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20
Q

PET

A

when you drink A solution that gets into your brain so you can see which parts of your brain are active (lights up on scan)

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21
Q

EEG

A

measures brain activity in waves
-Think sleep study

22
Q

MRI

A

shows a clear picture of the brain in 3-D

23
Q

CAT

A

X-ray photo

24
Q

FMRI

A

Shows brain overtime

25
Q

Sensory

A

Feel/aware of it (in)

26
Q

Glial cells

A

housekeepers and make sure neurons are working well

27
Q

Refractory period

A

When a neuron is recharging before it fires again

28
Q

Antagonist

A

Drugs that go in and block the real Neuro transmitters from doing their function

29
Q

Agonist

A

binds to Nuro receptor site and makes the neuron think it is the neurotransmitter
-ex. Caffeine mimics the wake up neurotransmitter

30
Q

Antidepressant

A

Stop reuptake of serotonin

31
Q

Myelin sheath

A

Speeds conduction of neuron

32
Q

Absolute threshold

A

you have to have enough neurotransmitters to get action potential

33
Q

Endocrine system

A

hormones

34
Q

Acetylcholine

A

memory and motor movement neurotransmitter

35
Q

Endorphins

A

pain relieving neurotransmitter
-Contributes to runners high

36
Q

Dopamine

A

a feel good Neurotransmitter

37
Q

Glutamate

A

A memory neurotransmitter

38
Q

Norepinephrine

A

helps control alertness and arousal (Neuro transmitter) also in adrenal glands

39
Q

GABA

A

A neurotransmitter that calms you down for sleep (Inhibiting)

40
Q

Axon

A

Passes messages away from the cell body to other neurons, muscles, or glands

41
Q

Terminal branches of axon

A

Form junctions with other cells

42
Q

Myelin sheath

A

Covers the axon of some neurons and health speed neural impulses

43
Q

Neural impulse

A

action potential/electrical signal traveling down the axon

44
Q

Cell body

A

The neurons life support center

45
Q

Synaptic gap

A

The gap between the receptor sites on receiving neurons and the axon terminal

46
Q

Soma

A

Cell body

47
Q

Neurons are made up of…

A

Sodium and potassium

48
Q

Depolarization

A

During refractory period when charge leaves the neuron and becomes positive

49
Q

Polarization

A

When charge comes in and becomes negative

50
Q

reflex

A

info coming from your sensory neurons send a message to the motor neurons before it goes to your brain
-ex. gets hit in the knee

51
Q

central nervous system

A

brain and spinal cord

52
Q

peripheral nervous system

A

everything other than brain and spinal chord

Psych (20 decks)

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