Brain/Neurons Flashcards

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1
Q

Dendrites

A

Receive info from other neurons

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2
Q

Nucleus

A

Middle of the cell hold DNA

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3
Q

Myelin Sheath

A

Protect the Axon and makes communication easier

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4
Q

Nodes of Ranvier

A

Gaps in myelin sheath

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5
Q

Axon

A

Carries info

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6
Q

Axon teminal

A

Bottom of neuron, sends messages to other neurons

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7
Q

Synapse

A

Gap between neurons, for neurotransmitters

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8
Q

Resting Potential

A

Inside axon (-) outside (+)

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9
Q

Stimulus threshold

A

Push needed to start action potential

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10
Q

Action potential

A

Electrical impulses,
channels open
(- to outside and (+) inside

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11
Q

Refectory Period

A

Repolarized to resting state

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12
Q

Afferent

A

Sensory to brain

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13
Q

Efferent

A

Motor from brain

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14
Q

Interneuron

A

Communicates between neurons

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15
Q

Glial cells

A

Feed, and take care of waste for neurons

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16
Q

presynaptic

A

sends

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17
Q

postsynaptic

A

recieves

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18
Q

Excitctory

A

increases neuron likely hood of firing

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19
Q

Inhibitory

A

Prevents neuron from firing.

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20
Q

Acetylcholine (AcH)

A

Voluntary movement
+ muscles issues (rigid)
- Alzheimer’s

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21
Q

Dopamine

A

“feel good”
+ Schizophrenia
-ADHD

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22
Q

Endorphins

A

Natural opioid
+ No warning of pain
- Feels pain

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23
Q

Serotonin

A

Natural mood stabilizer (sleeping, eating, mood)
+Mania
-Depression

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24
Q

GABA

A

Sleep cycle
+ Eating disorders
- Anxiety

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25
Q

Norepinephrine

A

Adrenaline
+ High blood pressure
-Depression

26
Q

Glutamate

A

Memory/learning
+Alzheimer’s
- Hard time thinking clearly

27
Q

Antaganist

A

inhibits

28
Q

Aganist

A

mimics

29
Q

Central Nervous system

A

Center of body
Brain
spine

30
Q

Spine

A

Reflexes (connect brain and peripheral system)

31
Q

Peripheral Nervous system

A

Extremities (carries info to CNS)

32
Q

Somatic

A

Voluntary movements

33
Q

Autonomic

A

Involuntary movement

34
Q

Sympathetic

A

Expand energy (fight or flight)

35
Q

Parasympathetic

A

Calms down flight or flight

36
Q

Hormones

A

Chemical signals in the endocrine system (blood stream)

37
Q

Pituitary Gland

A

Controls hormones (growth)
under the brain

38
Q

Adrenal Gland

A

Human stress response (adrenaline)

39
Q

Gonads

A

Sex hormones

40
Q

Thyroid Gland

A

Weight hormone

41
Q

Hypothroidism

A

Weight gain

42
Q

Hyperthyroidism

A

cannot gain Weight

43
Q

Brainstem

A

Responsible for automatic survival functions

44
Q

Medulla

A

Vital functions (heartbeat, blood pressure, breathing)

45
Q

Pons

A

Helps cordinate movement

46
Q

Reticular Function (RAS)

A

Maintains alertness (arousal)

47
Q

Thalamus

A

Sensory info (relay station) Not smell

48
Q

Cerebellum

A

Muscle movement and balance

49
Q

Hypothalamus

A

Regulate Pituitary gland (hunger ,thirst, body temp, pleasure)

50
Q

Amygdala

A

Emotional center (fight or flight)

51
Q

Hippocampus

A

Memory process

52
Q

Frontal lobe (prefrontal cortex)

A

Thoughts, decision, planning

53
Q

Motor cortex

A

Frontal lobe
speaking and muscle movement

54
Q

Parental Lobe (somatosensory)

A

Touch

55
Q

Temporal Lobe

A

Auditory

56
Q

Occipital Lobe

A

Vision

57
Q

EEG

A

Measures Brain waves

58
Q

CAT or CT

A

Basic picture of the brain

59
Q

PET scan

A

Use glucose based dye to detect brain functions

60
Q

MRI

A

Most detailed pics of brain structure

61
Q

fMRI

A

Most detailed (best) pics of brain processing