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Neuroscience > Chapter 5 > Flashcards

Chapter 5 Flashcards

1
Q

What blood vessel connects the two anterior cerebella Aa?

A

anterior communicating

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2
Q

What blood vessel connects the internal carotid to the posterior cerebellar Aa?

A

posterior communicating

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3
Q

What is the network of blood vessels that connects the circulation system in the brain?

A

Circle of Willis

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4
Q

Name the three dural sinuses.

A

superior, inferior and transverse

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5
Q

hemorrhagic

A

blood vessel leaks into brain

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6
Q

ischemic

A

A blocked and prevents flow, kills brain tissue because it is toxic

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7
Q

MS

A

myelin sheaths attacked 0 motor, sensory, autonomic, insidious, relapse/remit

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8
Q

How many cerebral cortical neuron connection on there?

A

21 billion and they are ALL PLASTIC

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9
Q

Cell body

A

soma

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10
Q

dendrites

A

places where messages are received

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11
Q

axon

A

transmitter of messages

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12
Q

hillock

A

a place where electrical signal created

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13
Q

presynaptic terminal

A

messages out

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14
Q

synaptic cleft

A

between

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15
Q

anterograde

A

messages from cell body through axon

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16
Q

retrograde

A

axon to cell body

17
Q

local

A

starter signal, capacity to spring and send

18
Q

action

A

huge, long distance messages, big change of polarity

19
Q

WHAT ARE THE CHARGES INSIDE/OUTSIDE OF CELL

A
  • IN/ + OUT
20
Q

NA and K

A

3 NA out for every 2 K in

21
Q

What is depolarization?

A

creating equal charges in and out of cell

22
Q

Depolarize

A

Excitatory, increased chance of long distance

23
Q

Hyper-polarize

A

Inhibiting, decreased chance of long distance

24
Q

receptor (modality0gated)

A

some in, small change

25
Q

synaptic (ligand-gated)

A

neurotransmitter connects with ligand lets flow - small change - can work with

26
Q

temporal summation

A

little pushes

27
Q

spatially

A

Big push

28
Q

AP is what kind of message?

A

long distance message - cell body to axon (voltage-gated)

29
Q

Where can an AP start?

A

hillock and trigger zone - both voltage-gated

30
Q

passive means?

A

long axon moved quickly

31
Q

active means?

A

far enough to create next AP

32
Q

What happens in refractory period?

A

spill than resets

33
Q

unmyelinated in location to each other?

A

right next to one another

34
Q

myelinated

A

far away

35
Q

Bipolar Neuron

A

2 major trunks, dendrite and axon - light info

36
Q

pseudo unipolar

A

peripheral axon, central axon - somato sensory

37
Q

multipolar

A

multiple dendrite, one axon - brain, somatic motor

38
Q

interneuron

A

extraordinarily tiny, 4 dendrite, from axon to another dendrite and can modify messages

Neuroscience (26 decks)

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