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Biol 205 > Ch. 17 > Flashcards

Ch. 17 Flashcards

1
Q

two divisions of the ANS

A

sympathetic and parasympathetic

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2
Q

ANS is the system of

A

motor neurons that innervates smooth, cardiac, and glands

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3
Q

SNS vs ANS effectors

A

SNS: skeletal muscle
ANS: smooth, cardiac, and glands

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4
Q

ANS/SNS neurotransmitter effects

A

SNS: excitatory only
ANS: excitatory or inhibitory

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5
Q

SNS/ANS efferent pathways/ganglia

A

SNS: single neuron (lower motor neuron)
ANS: 2 neurons pre/post

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6
Q

preganglionic neuron cell body found

A

lateral horn

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7
Q

preganglionic neuron myelination

A

lightly

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8
Q

preganglionic neuron termination

A

autonomic ganglion

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9
Q

postganglionic neuron cell body is in

A

autonomic ganglion

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10
Q

post ganglion neuron myelination

A

unmyelinated

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11
Q

post ganglionic neuron termination

A

at effector

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12
Q

sympathetic E division means

A

flight or fight

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13
Q

sympathetic division symptoms

A

increase hr, deep breathing, dry mouth, cold sweaty skin, dilated pupils, release of glucose

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14
Q

resting and digesting divison

A

parasympathetic

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15
Q

parasympathetic division D

A

digestion, defecate, diuresis

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16
Q

Parasympathetic and sympathetic division innervate

A

same tissues, but different functions

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17
Q

sympathetic also referred to as

A

thoracolumbar divivison of ANS

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18
Q

parasympathetic aka

A

cranosacral division

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19
Q

Sympathetic innervates tissue

A

visceral organs, heart, lungs, pancreas, reproductive,

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20
Q

Sympathetic innervates vessels of

A

smooth muscle blood vessels

21
Q

sympathetic preganglionic fibers length

A

short

22
Q

sympathetic postganglionic fibers

A

long

23
Q

since sympathetic preganglionic are short they are

A

closer to CNS

24
Q

1 sympathetic preganglionic can synapse with

A

32 ganglionic neurons

25
Q

sympathetic chain ganglia are found

A

lateral vertebral column

26
Q

route of sympathetic preganglionic fibers

A

exit cord through ventral root
into spinal nerve
pass into white ramus communicans
enter sympathetic chain ganglion

27
Q

1 option for preganglionic fibers in sympathetic chain

A

synapse with post ganglionic neuron in same chain ganglion

28
Q

2 option for preganglionic fibers in sympathetic chain

A

ascend/descend sympathetic chain to synapse in diff chain ganglion

29
Q

3 option for preganglionic fibers in sympathetic chain

A

pass through chain ganglion to synapse in collateral ganglion

30
Q

postganglionic fibers for sympathetic chain ganglia enter

A

dorsal or ventral ramus of spinal nerves via gray ramus communicans

31
Q

sympathetic postganglionic fibers exit

A

via sympathetic nerves

32
Q

ANS collateral ganglia are located

A

anterior to the vertebral column

33
Q

collateral ganglia are destination for fibers

A

inferior to T4

34
Q

splanchnic nerves

A

nerve running sympathetic chain going out to collateral ganglia

35
Q

preganglionic fibers pass through sympathetic chain and

A

celiac ganglion to synapse with chromaffin cells

36
Q

preganglionic fibers pass through sympathetic chain and celial ganglion to synapses directly with chromaffin cells in the

A

adrenal medulla

37
Q

chromaffin cells are modified

A

post ganglionic neurons

38
Q

chromaffin cells release

A

epinephrine and norepinephrine

39
Q

Parasympathetic division arrises from

A

cranial nerves III
VII
IX
X

40
Q

parasympathetic 90% preganglionic fibers

A

vagus nerve

41
Q

parasympathetic division preganglionic fibers synapse with

A

post ganglionic neurons in terminal or intramural ganglia

42
Q

parasympathetic division preganglionic fibers

A

long

43
Q

parasympatetic division post ganglionic fibers

A

short

44
Q

parasympathetic division less divergence means

A

more specific response

45
Q

parasympathetic division ganglia are

A

closer to their target (terminal)

46
Q

organs parasympathetic division organs innervate

A

eye, salivary, glands, sweat glands

47
Q

parasympathetic division does not innervate

A

blood vessels

48
Q

most organs of the body are innervated by

A

both divisons of ANS

Biol 205 (45 decks)

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