CNS Flashcards

1
Q

Doral horn has what type of fibers

A

sensory affarent

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2
Q

Ventral horn has what type of fibers

A

motor efferent

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3
Q

Interolateral horn has what type of fibers

A

autonomic

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4
Q

Alar plates have what type of n?

A

sensory affarent

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5
Q

Basilar plates have what type of n?

A

motor efferent

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6
Q

What do A-alpha n fibers transmit?

A

proprioception

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7
Q

What do A-beta n fibers transmit?

A

touch

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8
Q

What do A-delta n fibers transmit?

A

pain, temp (1st pain)

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9
Q

What do C n. fibers transmit?

A

pain, temp, itch (2nd pain)

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10
Q

What n. fibers are unmyelinated?

A

C

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11
Q

SNS fiber characteristics

A

short pre

long post

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12
Q

PNS fiber characteristics

A

long pre

short post

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13
Q

What to alpha-1 receptors innervate?

A

VSM = vasoconstriction

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14
Q

What do alpha-2 receptors innervate?

A
presynaptic n. terminals 
platelets
fat cells 
GI tract 
= inhibition
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15
Q

What do Beta-1 receptors innervate?

A

heart (inc HR and contractility)

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16
Q

What do Beta-2 receptors innervate?

A

skeletal and bronchial smooth m (dilation)

17
Q

NE stimulates what receptors

A

alpha

18
Q

Epi stimulates what receptors

A

alpha and beta

19
Q

Spinothalamic tract fxn

A

lateral: pain, temp, light anterior: touch

20
Q

Dorsal (post) column fxn:

A

light touch
vibration
pressure
proprioception

21
Q

cortiospinal (pyramidal) tract fxn:

A

fine skilled skeletal m. movement

22
Q

Extrapyramidal tract fxn

A

gross motor movement, posture, balance

23
Q

What spinal tract controls neck m.

A

tectospinal

24
Q

Spinal cord lesions cause what type of dysfunction?

A

ipsilateral motor loss (corticospinal)

contralateral pain and temp loss (spinothalamic)

25
Q

What’s the most abundant excitatory NT?

A

Glutamate

26
Q

What’s the most abundant inhibitory NT?

A

GABA

27
Q

olgiodendrocyte cells

A

myelination

28
Q

epindymal cells

A

line ventricular system

29
Q

microglial cells

A

phagocytic cells of CNS

30
Q

Babinski sign indicates damage to what neural structure?

A

upper motor neuron