quiz 1 Flashcards

1
Q

Dendrites

A

receive info

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2
Q

Axon Hillock

A

where axon originates (cone shaped), where info is gathered & integrated

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3
Q

axon

A

Carries action potential from cell body to axon terminal

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4
Q

myelin

A

insulates axons to increase speed that action potentials are conducted, formed by glial cells

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5
Q

Nodes of Randeveir

A

uninsulated patches of axon, increases signal boosting

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6
Q

Axon terminals

A

transmit neuron’s signals across synapses to other cells

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7
Q

axon collateral

A

axon splits into multiple branches

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8
Q

Input Zone

A

Neurons collect & process info from the environment to other cells

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9
Q

Integration Zone

A

Decision to produce Neural signal

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10
Q

conduction zone

A

info is transmitted over distances (axon)

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11
Q

Output Zone

A

Neuron transfers info to other cells (axon terminal)

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12
Q

Multipolar Neuron

A

1 axon, multiple dendrites

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13
Q

Bipolar Neuron

A

1 axon, 1 dendrite (sensory systems - vision, smell, sight)

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14
Q

Unipolar Neuron

A

after leaving cell body splits into 2 sections - dendritic branches & axon (spinal & cranial nerves - pain, temperature, etc.)

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15
Q

Presynaptic Membrane

A

transmits info by releasing neurotransmitter (on axon terminal)

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16
Q

Synaptic Cleft

A

space between pre / post synaptic neurons

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17
Q

Postsynaptic Membrane

A

receives info

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18
Q

Axonal Transport

A

transport materials from cell body to axon terminals & back to cell body

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19
Q

Electrical Movement

A

electrical signals down axon to target innervating neuron

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20
Q

Schwan Cells

A

Type of Glial cell that forms Myelin in peripheral Nervous System

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21
Q

Microglial Cells

A

remove cellular debris from injured / dead cells (Glial Cell)

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22
Q

Oligodendrocytes:

A

form myelin in CNS & myelinates axons (glial cell)

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23
Q

Astrocystes

A

star shaped, run in all directions, control blood flow, help form membrane that contains the brain (glial cell)

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24
Q

Peripheral Nervous System

A

nerves & neurons outside the brain / spinal cord

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25
Q

Somatic Nervous System

A

major muscles / sensory systems, receives info VOLUNTARILY (PNS)

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26
Q

Cranial Nerve

A

connected directly to brain (PNS / Somatic Nervous System)

27
Q

Spinal Nerves

A

Emerges from spinal cord, 31 pairs that carry sensory & motor axons

28
Q

Autonomic Nervous System

A

Connections of internal organs, involuntary

29
Q

Sympathetic Nervous System

A

“Fight or Flight” - increase in heart rate & blood pressure, relaxes bladder, inhibits digestion (Autonomic Nervous System in PNS)

30
Q

Parasympathetic Nervous System

A

“rest & digest” - decreases heart rate, stimulates digestion, contracts bladder (Autonomic Nervous System of PNS)

31
Q

Cerebral Cortex

A

Thick sheet covering cerebral hemisphere

32
Q

Corpus Callosum

A

Connects left & right hemisphere

33
Q

Frontal Lobe

A

Higher Order executive functioning, voluntary movement

34
Q

Parietal Lobe

A

Processes somatosensory info

35
Q

Temporal Lobe

A

Processes emotions & language

36
Q

Occipital Lobe

A

Processes visual stimuli

37
Q

Forebrain

A

Develops into 2 subdivisions

38
Q

Telencephalon

A

Forebrain (anterior) - becomes cerebral hemisphere in adult brain

39
Q

Diencephalon

A

Forebrain - posterior becomes thalamus & hypothalamus in adulthood

40
Q

Midbrain

A

middle division of neural tube

41
Q

Hindbrain

A

Develops into 3 structures

42
Q

Cerebellum

A

coordination & control

43
Q

Pons

A

origin of cranial nerves (midbrain)

44
Q

Medulla

A

Heart Rate & respiration (midbrain)

45
Q

Limbic System

A

Emotion & Learning

46
Q

Amygdala

A

Emotional regulation & perception of odor (limbic system)

47
Q

Hippocampus & Fornix

A

Learning / Memory (limbic System)

48
Q

Olfactory bulb

A

Smell (limbic system)

49
Q

hypothalamus

A

regulate hormones & motivated behaviors - thirst, hunger, temp. regulation (limbic system)

50
Q

Thalamus

A

Directs sensory info to appropriate region of cortex (limbic system)

51
Q

Cingulate Gyrus

A

Direction of attention to specific thing (limbic System)

52
Q

Substantia Nigra (Midbrain - Tegementum)

A

innervates basal ganglia & loss of its neurons (leads to Parkinsons)

53
Q

Tectum

A

Roof of Midbrain

54
Q

Superior Colliculi

A

Vision (midbrain - tectum)

55
Q

Inferior Colliculi

A

Hearing (midbrain - tectum)

56
Q

Meninges

A

3 membranes that protect brain & spinal cord

57
Q

dura mater

A

outer sheet, tough layer (meninges)

58
Q

Arachnoid

A

Thin layer between dura & pita (meninges)

59
Q

Pita Mater

A

Innermost meninges, adheres tightly to brain

60
Q

Cerebrospinal Fluid (CSF)

A

fluid that fills the cerebral ventricles, picks up waste for clearance, conveys nutrients

61
Q

Glymphatic System

A

lymphatic system in brain that removes waste & moves nutrients / signaling compounds
Occurs in sleep
“trash collector””

62
Q

Cerebral Arteries

A

3 pairs of large arteries within skull that supply blood to cerebral Cortex

63
Q

blood brain barrier

A
  • makes movement of substances from blood vessels into cells more difficult
  • protects brain from infections
64
Q

stroke

A

clot, narrowing or rupture that interrupts blood supply to specific brain region