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15 Cards in this Set
- Front
- Back
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What are the 2 main divisions of the peripheral nervous system?
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Somatic motor system
Autonomic nervous system (ANS) |
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Name the divisions of the autonomic nervous system (ANS)
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1) sympathetic (SNS)
2) parasympathetic (PSNS) |
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What are the primary functions of the PSNS?
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Rest/Digest - "housekeeping"
1) regulation of heart (dec.) 2) regulation of secretory glands (inc) 3) regulation of smooth muscle (inc) |
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What are the primary functions of the SNS?
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"fight/flight"
1) (inc) HR/vasocinstriction 2) (dec) temp - shunts blood away from periphery 3) fight/flight rxn |
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What transmitter does the PSNS employ?
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cholinergic
ACh - organs |
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What transmitter does the SNS employ?
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adrenergic
NE - organs Epi - adrenal medulla (direct) ACh - sweat glands |
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What transmitter does the somatic motor system employ?
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Cholinergic
ACh 1 motor neuron |
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What is a sympathomimetic ?
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adrenergic agonist
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What is a sympatholytic?
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adrenergic antagonist
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What is a parasympathomimetic?
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cholinergic agonist
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what is a parasympatholytic?
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cholinergic antagonist
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Describe fight/flight response of the SNS
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1)mobilization of glucose
2)diversion of blood from peripheral circulation to brain/hrt/kidneys 3)HR/BP regulation 4)dilation of pupils 5)Bronchodilation 6) temp regulation/vasodilation/constriction (inc/dec) |
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Describe "housekeeping" chores of the PSNS.
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1) dec HR
2) inc GI secretions 3) emptying bladder/bowel 4) pupils: constriction 5)lens: near vision 6) bronchoconstriction |
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What system controls vasoconstriction/vasodilation?
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SNS
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What are the 3 postganglionic receptors of the subdivisions of the PNS?
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PSNS: nicotinicN
SNS: nicotinicN Somatic motor system: nicotinicM |
