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Physiology
Sympathetic NS
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Created by
Grace Broadbent
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Cards (25)
what type of response is sympathetic NS
fight
or
flight
where do the nerves of the SNS originate
T1
-
T12
L1
-
L3
what nerves travel directly to organs in the SNS
celiac
superior
mesenteric
inferior
mesenteric
in the SNS what size are the preganglionic and ganglionic fibres
pre =
short
gang =
long
in the PNS what size are the preganglionic and ganglionic fibres
pre =
long
gang =
short
what is the neurotransmitter at ganglions
acetylcholine
what does activating nicotinic receptors release
adrenaline
and
noradrenaline
what does alpha 1 cause
increase
calcium
and
IP3
what does alpha 2 cause
decrease in
cAMP
inhibition of
adenylyl
cyclase
what does beta 1 cause
stimulate
adenylyl
cyclase
increase
cAMP
what does beta 2 cause
stimulate
adenylyl
cyclase
increase
cAMP
what does nicotinic receptors cause
opening of
sodium
and
potassium
channels
what does muscarinicreceptors cause
increase
calcium
release
decreased
adenylyl
cyclase
decreased
cAMP
is alpha 1 receptor stimulatory or inhibitory
stimulatory
is alpha 2 receptor stimulatory or inhibitory
inhibitory
what activates alpha 1
noradrenaline
what activates alpha 2
noradrenaline
is B1 and B2 stimulatory or inhibitory
stimulatory
what do indirect acting adrenoreceptor agonists do
inhibit reuptake of released
transmitter
are dilator muscles controlled by sympathetic or para
sympathetic
are contrictor muscles controlled by sympathetic or para
parasympathetic
is bladder filing controlled by sympathetic or para
sympathetic
is bladder emptying controlled by sympathetic or para
parasympathetic
where are nicotinic receptors or cholinoreceptors found
postganglionic
neurons
where are muscarinic receptors or cholinoreceptors found
sweat
glands