Flashcards
Autonomic Nervous System
Cards in this deck (26)
- 1What is an agonist?Something that stimulates the receptor
- 2What is an antagonist?something that blocks the receptor
- 3Parasympathetic nervous system: ______ preganglionic fibre releasing ___________ onto __________ receptorsLong
acetylcholine (ACh) onto nicotinic (N) receptors - 4Ganglion located ________ to the end-organClose
- 5______ unmylelinated postganglionic fibre, releasing _________ onto ___________ receptorsShort
releasing ACh onto muscarinic (M) receptors - 6What neurotransmitter do the neurones of the PSNS always release?Acetylcholine
- 7Sympathetic nervous system: ____________ preganglionic fibre releasing _____ onto _____ receptorsShort preganglionic fibres
releasing ACh onto N receptors - 8Sympathetic nervous system: Ganglion is located in the ______________________ close to the spinal cordparavertebral chain
- 9Sympathetic nervous system: Innervates _____________ where ________________ is releasedadrenal medulla
adrenaline (Ad) - 10Sympathetic nervous system: ___________ unmylenated postganglionic fibre releasing ___________ onto ________________Long postganglionic fibres
releasing noradrenaline (NAd) onto a/b adrenoceptors - 11In the PSNS: Pupils ______ salivation _______ respiratory rate ______ heart rate _____ blood vessels ________constrict
increases
decreases
decreases
dilate - 12In the PSNS: digestive processes are _______ bladder muscles ________ relaxed rectum _________ defecationstimulated
contract
relax - 13In the SNS: Pupils _______ Salivation _______ RR _____ HR ______ blood vessels _______ digestive processes are _________dilate
decreases
increases
increased
constrict
inhibited - 14In the SNS: bladder muscles ______ defecation is ___________relax
inhibited - 15What neurotransmitter do Cholinergic Neurons release?Achelycholine
- 16ACh is the transmitter at: _____ autonomic ganglia, parasympathetic ________ junctions, ___________ junctionALL
Neuroeffector
Neuromuscular - 17What are the two forms of Cholinesterase (ChE) ?1. "True" cholinesterase or acetylcholinesterase (AChE)
2. Pseudocholinesterase or butyrylcholinesterase (BuChE) - 18Anticholinesterases have three types:1. Short-acting
2. Medium-acting
3. Irreversible - 19Noradrenergic transmission: Noradrenergic neurones are_____ and release _______Postganglionic sympathetic neurons
NAd - 20Nicotinic receptors are found where?in the postsynaptic neurone of both PSNS and SNS
- 21NAd and Ad are terminated by what two processes?Uptake:
Neuronal uptake (75%)
Extraneuronal uptake (25%)
(blocked by TCA's e.g. amphetamine, cocaine)
Enzymatic degradation - 22What are the types of postsynaptic receptors?Cholinergic:
Nicotinic and Muscarinic receptors
Adrenergic:
a1 and a2 receptors - 23What is a type of muscarinic agonist?ACh
- 24What is a type of muscarinic antagonist?Atropine and ipratropium
- 25Autonomic tone: Sympathetic tone predominates what?veins/arteries
sweat glands - 26Parasympathetic tone predominates?Just about everywhere else:
eye, heart, GIT, GU, GIT glands, Bronchi
Information
- Description
- Pathophysiology and Pharmacology 1 2015 Flashcards on Autonomic Nervous System, created by b.graham on 08/06/2015.
- Created by
- b.graham · Jun 2015
- Updated
- Feb 3, 2018
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