ANS

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  • Created by: Sarah
  • Created on: 26-04-17 13:54
what is a b2 selective agonist for the adrenergic system?
salbutamol
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what effect on the heart does adrenaline binding to beta receptors do?
increases conractility (hr up)
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what is nasal decongestants a selective agonist for?
alpha receptors in the adrenergic system
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whats adrenaline used as a treatment for?
anaphylaxis shock (allergic reaction), its in the epipen
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what synapses with the adrenal medulla to release adrenaline/noradrenaline?
pre-ganglionic sympathetic neurons
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what is a nicotinic antagonist?
curare
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what part of the nervous system is the ANS?
visceral motor system
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what carries 80% of parasympathetic stimulation outflow?
the vagus nerve
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sympathetic system 2 options for transmitters+receptors at the postganglionic neuron releases to the receptors on the target cell?
a)postganglionic releases ach to muscarinic receptor (for sweat glands) b) releases noradrenaline to alpha or beta adrenergic receptors
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what does adrenaline do?
potent vasopressor, dilates bronchi, increases bp + activates both alpha+beta receptors
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what are the 2 exceptions to antagonistic control by sympa and parasym NS?
male sexual function + sweat gland and blood vessel smooth muscle
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what are sweat glands and blood vessels mostly innerveated by?
sympathetic NS
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how does blood vessels constriction by the sympa NS work?
increase in signal rate causes constriction
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does parasympa or sympa responsible for an erection?
parasympa
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what NS is responsible for ***********?
sympa
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what is the D division?
the parasympathetic NS- digest, defecation and diuresis
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what are sympaomimetics?
mimic effect of sympathetic NS
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what is the vagus nerve?
parasymapthetic, mixed cranial nerve 10
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what is pilocarpine used to treat?
glaucoma
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what is glaucoma?
tubes in the eye are blocked, aqueous humor is not drained, build up of introcular pressure damages occular nerve
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how does pilocarpine treat glaucoma
reduces pressure by increasing drainage of fluid by the blood
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what are the symptoms of having too much muscarine?
increase of fluid; sweating, saliva, tearflow, decreased bp and abdominal pain
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how does muscarine cause death?
cardiac and respiratory failure
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what is muscarine?
comes from mushrooms, is a cholinergic agonist
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what does atropine block?
muscarinic receptors
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what does the cholinergic antagonist atropine do to the body?
increases body temp+ HR, pupil dilation, SM relazant (uriniary tract, buiary, bronchial), decreased secretion (saliva, bronchial sweat), decreased GI motility + CNS disorentiation and agitation
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what are the non-adergenic, non-cholinergic (NANC) neurotransmitters?
ATP, nitric oxide, VIP and substance P
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what drug is used to treat erectile dysfuction?
sildenafil
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how does sildenafil work?
it increases nitic oxide action
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beta blocker examples?
proponal, atenolol
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3 differences between para and sympa
postganglionic transmitter, fibre length, anatomical location
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Other cards in this set

Card 2

Front

what effect on the heart does adrenaline binding to beta receptors do?

Back

increases conractility (hr up)

Card 3

Front

what is nasal decongestants a selective agonist for?

Back

Preview of the front of card 3

Card 4

Front

whats adrenaline used as a treatment for?

Back

Preview of the front of card 4

Card 5

Front

what synapses with the adrenal medulla to release adrenaline/noradrenaline?

Back

Preview of the front of card 5
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