Ch 15 Sympathetic Nervous System Anatomy Flashcards

1
Q

Which spinal nerves does the fibers originate from?

A

T1-L2

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2
Q

Where are the pre and postganglionic fibers found?

A

pre: found before the ganglion
post: found after the ganglion

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3
Q

What are the sizes of the pre and postganglionic fibers in the sympathetic nervous system?

A

preganglionic: short
postganglionic: long

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4
Q

Locations of the 3 sympathetic ganglia

A
  • sympathetic chain ganglia
  • collateral ganglia
  • adrenal medullae
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5
Q

Types of adrenergic receptors

A

alpha 1: widespread, excite, inc. metabolism
alpha 2: muscles, glands, inhibit
beta 1: heart, liver, adipose
beta 2: inhibit digest, smooth muscle of vessels
beta 3: lipolysis in adipose

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6
Q

What are the effects of sympathetic stimulation?

A

dilation of eyes, sweat glands increased, arrector pili contracted, heart/BP increased etc.

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7
Q

What organs are innervated by sympathetic fibers?

A

glands, heart, lungs, liver, gall bladder, stomach, spleen, intestines, kidney, bladder etc.

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