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Autonomic Nervous System > Efferent ANS > Flashcards

Efferent ANS Flashcards

1
Q

SNS origin

A

Thoracolumbar
-T1-L3

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2
Q

SNS cell body origin

A

Intermediolateral horn of spinal cord

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3
Q

SNS axon exit location

A

Ventral roots

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4
Q

Parasympathetic origin

A

Craniosacral
-CN 3, 7, 9, 10
-S2-3

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5
Q

SNS ganglia location

A

Near spinal cord (sympathetic chain)

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6
Q

Parasympathetic ganglia

A

Near or inside effector organ/ tissue

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7
Q

SNS post- to- preganglionic ratio

A

30:1

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8
Q

Parasympathetic post- to- preganglionic ratio

A

1:1 to 3:1

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9
Q

SNS or parasympathetic: Postsynaptic amplification contributes to mass response

A

SNS

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10
Q

SNS or parasympathetic: Precise control of each effector organ/ tissue

A

Parasympathetic

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11
Q

SNS or parasympathetic: Long, myelinated B fiber (preganglionic)

A

Parasympathetic

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12
Q

SNS or parasympathetic: Short, myelinated B fiber (preganglionic)

A

SNS

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13
Q

SNS or parasympathetic: Long, unmyelinated C fiber (postganglionic)

A

SNS

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14
Q

SNS or parasympathetic: Short, unmyelinated C fiber (postganglionic)

A

Parasympathetic

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15
Q

SNS neurotransmitter at ganlgia

A

ACh

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16
Q

Parasympathetic neurotransmitter at ganglia

A

ACh

17
Q

SNS receptor at ganglia

A

Nicotinic type Nn

18
Q

Parasympathetic receptor at ganglia

A

Nicotinic type Nn

19
Q

Neurotransmitter from most postganglionic fibers

A

Norepinephrine

20
Q

Neurotransmitter from postganglionic fiber

A

ACh

21
Q

Where is ACh the neurotransmitter in the SNS?

A

Sweat glands
Piloerector muscles
Some blood vessels

22
Q

Receptor at effector organ- SNS

A

Alpha
Beta
Dopamine
(some) Muscarinic

23
Q

Receptor at effector organ- PNS

A

Muscarinic

24
Q

Where in the body is norepinephrine and epinephrine released directly into the system?

A

Chromaffin cells of the adrenal medulla

Autonomic Nervous System (13 decks)

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