ANS and endocrine system

Created by: Milikah
Created on: 17-12-20 18:16

what is the parasympathetic and sympathetic

p:
pupils constrict, slow hr, airways constricts bronchial tubes, liver stimulates bile realease, blood vessels contract, digestive system stimulates activity, uterus relaxation, urinary inc.
s:
pupils dilate, hr inc, airways dilate, sweat gland secretio

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what happens in the autonomic baroreceptor reflex?

when standing up, the carotid artery pressure falls
baroreceptor firing rate in wall palls
vagal parasympathetic tone reduced
hr increases, and systemic blood pressure rises
brain o2 maintained and postal hypotension (when bp drops standing up) is avoided

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target tissues of ANS

smooth muscle
- found in visceral (internal organs mainly abdominal cavity)
-vascular ( eg found in veins)
exocrine glands
-

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PNS and SNS wiring; what it is

they have two neurone wiring, goes along preganglionic neuron to the synapse, into target organ and into post ganglionic neuron.
PNS ganglia usually lie close to or within target organ eg heart.

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role of Acetylcholine and Noradrenaline

ace:
nor:

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Other cards in this set

Card 2

Front

what happens in the autonomic baroreceptor reflex?

Back

Card 3

Front

target tissues of ANS

Back

Card 4

Front

PNS and SNS wiring; what it is

Back

Card 5

Front

role of Acetylcholine and Noradrenaline

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ANS and endocrine system