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BIPN 152 > Midterm One > Flashcards

Midterm One Flashcards

1
Q

reticular theory

A

golgi. continuum of protoplasmic links

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2
Q

neuron doctrine

A

ramon y Cajal. discrete entities communicating at specialized contact: synapses

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3
Q

CNS glia

A

oligodendrocytes, astrocytes, microglia

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4
Q

PNS glia

A

schwann cells

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5
Q

dendrite

A

neuron input

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6
Q

soma

A

integrates input

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7
Q

axon

A

generates output

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8
Q

one axon can contact lots of different neurons this is called

A

divergence

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9
Q

multiple dendrites of a neuron receive multiple connections this is called

A

convergence

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10
Q

three main obvious parts of brain

A

cerebellum, brainstem, cerebrum

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11
Q

meninges

A

3 layers of tissue that cover and protect brain

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12
Q

meninges layers

A

dura mater, arachnoid, pia mater

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13
Q

____ reveals precise and subtle details of regional specialization in brain

A

fMRI

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14
Q

axial plane

A

horizontal

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15
Q

coronal plane

A

frontal (upright)

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16
Q

sagittal plane

A

sideways

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17
Q

white matter is

A

myelinated

18
Q

the cell’s interior is ________ relative to the exterior

A

negative

19
Q

action potentials

A

all or none, elementary unit nerve pulses

20
Q

graded potentials

A

gradient in magnitude of response

21
Q

excitatory neurons

A

release Ach, glutatmate

22
Q

inhibitory neurons

A

release GABA, glycine

23
Q

what happens when you block VG K channels

A

AP is prolonged

24
Q

what happens if you block VGSC inactivation gate

A

AP prolonged

25
Q

in AP’s, what encodes stimulus strength

A

frequency

26
Q

in graded potentials, what encodes stimulus strength

A

amplitude (size)

27
Q

the skin has specialized nerve endings for three things

A

mechanosensation, pain, temperature

28
Q

receptor potentials are _____ potentials

A

graded

29
Q

the AP flows directionally down the axon due to

A

serial activation of Na channels

30
Q

TTX blocks APS by blocking

A

VGSC’s

31
Q

neurotransmitters are released in discrete packets called

A

quanta

32
Q

____ entry is essential to trigger NT release

A

calcium

33
Q

the SNARE complex

A

regulates fusion between vesicle membrane and plasma membrane

34
Q

NMDA receptors

A

blocked by MG2+ ion unless membrane depolarized, calcium (and Na/K) permeable

35
Q

synaptotagmin is _____ sensor

A

calcium

36
Q

tri synaptic prime circuit

A

dentate gyrus ca3 ca1

37
Q

specificity in synapses

A

one is active one is not

38
Q

associativity in synapses

A

2+ synapses, one strongly stimulated, one not

39
Q

hebbian rules

A

neurons fire together wire together

40
Q
A

BIPN 152 (4 decks)

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