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125 Cards in this Set
- Front
- Back
The ANS functions to ______________
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Automatically regulate body systems like cardiac, vasculature, lungs, saliva flow, etc.
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Sensory nerve fibers are also called ___________ fibers
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Afferent
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Motor nerve fibers are also called _________ fibers
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Efferent
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Nerve fibers that occur before that neuron synapses with another neuron in the ganglia are called ___________
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Preganglionic nerve fibers
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Nerve fibers that occur after the synapse
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Postganglionic nerve fibers
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The space between pre/postganglionic nerve fibers is called the ______ or _____ _______
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Synapse or synaptic cleft
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This part of the ANS exits the spine at the cranial and caudal ends of the spine
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Parasympathetic nervous system
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The "main" nerve of the PNS
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Vagus nerve
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This part of the ANS exits in the thoracolumbar region of the spine
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Sympathetic nervous system
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This organ sits on the top of the kidney and also secretes epinephrine and norepinephrine into the circulation
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Adrenal gland
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The part of the adrenal gland that contains the epi/norepinephrine
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Adrenal medulla
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A term used to describe the effects of the SNS
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Fight or flight system
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Chemicals released into the synapse that stimulate the postganglionic fiber to fire
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Neurotransmitters
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The neurotransmitter present in the ganglia of the ANS is ____________
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Acetylcholine
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The part of the adrenal gland that contains the epi/norepinephrine
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Adrenal medulla
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Tissue that responds to muscarine is identified as _____________
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Muscarinic
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A term used to describe the effects of the SNS
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Fight or flight system
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A drug that acts at the location where acetylcholine is released is termed ___________
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Cholinergic
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Chemicals released into the synapse that stimulate the postganglionic fiber to fire
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Neurotransmitters
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The part of the adrenal gland that contains the epi/norepinephrine
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Adrenal medulla
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A drug that acts at the location where NE is released is _______________
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Adrenergic
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The neurotransmitter present in the ganglia of the ANS is ____________
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Acetylcholine
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A term used to describe the effects of the SNS
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Fight or flight system
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A drug that acts at the location where the PNS acts has the prefix ___________
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Parasympatho-
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Chemicals released into the synapse that stimulate the postganglionic fiber to fire
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Neurotransmitters
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Tissue that responds to muscarine is identified as _____________
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Muscarinic
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A drug that acts where the SNS acts has the prefex ___________
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Sympatho-
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A drug that acts at the location where acetylcholine is released is termed ___________
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Cholinergic
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The neurotransmitter present in the ganglia of the ANS is ____________
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Acetylcholine
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A drug that acts where the ANS acts and produces the same effect as the neurotransmitter has the suffix ___________
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-Mimetic
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A drug that acts at the location where NE is released is _______________
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Adrenergic
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Tissue that responds to muscarine is identified as _____________
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Muscarinic
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A drug that acts at the location where the PNS acts has the prefix ___________
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Parasympatho-
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A drug that acts at the location where acetylcholine is released is termed ___________
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Cholinergic
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A drug that acts where the SNS acts has the prefex ___________
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Sympatho-
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A drug that acts at the location where NE is released is _______________
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Adrenergic
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A drug that acts where the ANS acts and produces the same effect as the neurotransmitter has the suffix ___________
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-Mimetic
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A drug that acts at the location where the PNS acts has the prefix ___________
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Parasympatho-
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A drug that acts where the SNS acts has the prefex ___________
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Sympatho-
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A drug that acts where the ANS acts and produces the same effect as the neurotransmitter has the suffix ___________
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-Mimetic
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The part of the adrenal gland that contains the epi/norepinephrine
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Adrenal medulla
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A term used to describe the effects of the SNS
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Fight or flight system
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Chemicals released into the synapse that stimulate the postganglionic fiber to fire
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Neurotransmitters
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The neurotransmitter present in the ganglia of the ANS is ____________
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Acetylcholine
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Tissue that responds to muscarine is identified as _____________
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Muscarinic
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A drug that acts at the location where acetylcholine is released is termed ___________
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Cholinergic
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A drug that acts at the location where NE is released is _______________
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Adrenergic
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A drug that acts at the location where the PNS acts has the prefix ___________
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Parasympatho-
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A drug that acts where the SNS acts has the prefex ___________
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Sympatho-
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A drug that acts where the ANS acts and produces the same effect as the neurotransmitter has the suffix ___________
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-Mimetic
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The part of the adrenal gland that contains the epi/norepinephrine
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Adrenal medulla
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A term used to describe the effects of the SNS
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Fight or flight system
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Chemicals released into the synapse that stimulate the postganglionic fiber to fire
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Neurotransmitters
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The neurotransmitter present in the ganglia of the ANS is ____________
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Acetylcholine
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Tissue that responds to muscarine is identified as _____________
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Muscarinic
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A drug that acts at the location where acetylcholine is released is termed ___________
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Cholinergic
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A drug that acts at the location where NE is released is _______________
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Adrenergic
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A drug that acts at the location where the PNS acts has the prefix ___________
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Parasympatho-
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A drug that acts where the SNS acts has the prefex ___________
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Sympatho-
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The part of the adrenal gland that contains the epi/norepinephrine
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Adrenal medulla
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A drug that acts where the ANS acts and produces the same effect as the neurotransmitter has the suffix ___________
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-Mimetic
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A term used to describe the effects of the SNS
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Fight or flight system
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Chemicals released into the synapse that stimulate the postganglionic fiber to fire
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Neurotransmitters
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The neurotransmitter present in the ganglia of the ANS is ____________
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Acetylcholine
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Tissue that responds to muscarine is identified as _____________
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Muscarinic
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A drug that acts at the location where acetylcholine is released is termed ___________
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Cholinergic
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A drug that acts at the location where NE is released is _______________
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Adrenergic
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A drug that acts at the location where the PNS acts has the prefix ___________
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Parasympatho-
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A drug that acts where the SNS acts has the prefex ___________
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Sympatho-
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A drug that acts where the ANS acts and produces the same effect as the neurotransmitter has the suffix ___________
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-Mimetic
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A drug that acts at the location where the ANS acts but blocks the action of the neurotransmitter has the suffix ________ or ________
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-Lytic or -blocker
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The structures in the neuron terminals that contains and stores the neurotransmitter are called ____________
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Vesicles
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A nerve action potential is also called ____________
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Depolarization
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Return of a neuron to it's original electrical state after depolarization is called _______________
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Repolarization
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An enzyme that gets rid of acetylcholine
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Acetylcholinesterase
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Direct acting cholinergic agents work by _____________
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Stimulating a receptor
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Indirect acting cholinergic agents work by _____________
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Causing the release of neurotransmitter which then stimulates the receptor
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Another indirect acting Parasympathomimetic agent works by inhibiting the enzyme _______________
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Acetylcholinesterase
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Cholinergic drug effects on the heart
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Negative chronotropic and negative inotropic action (Decreased cardiac outpu, decreased BP/HR)
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florid
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adj. very fancy, usually refers to intangible objects (ie. florid speech)
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Parasympathomimetic drug effects on the eye
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Miosis only
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Toxic effects of cholinergic agents are described by this acronym
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SLUD Salivation, lacrimation, urination, and defecation
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Relative contraindications to cholinergic agents
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Bronchial asthma, hyperthyroidism, GI or GU tract obstruction, severe cardiac disease, myasthenia gravis treated with neostigmine and peptic ulcer disease
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A condition of the eye treated with cholinergic agents to decrease the IOP (intraocular pressure)
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Glaucoma
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A naturally occurring cholinergic agent used in the treatment of xerostomia is ________ (__________)
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Pilocarpine (Salagen)
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Indirect acting cholinergic agents called cholinesterase inhibitors. Name three
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Edrophonium, physostigmine and neostigmine
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Examples of irreversible cholinesterase inhibitors (warfare agents)
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Parathion, malathion, and sarin
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Drugs that block the muscarinic receptors and not nicotinic receptors are called ________ agents
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Muscarinic
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Tertiary anticholinergic (parasympatholytic) agents
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Atropine/scopolamine
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Quaternary anticholinergic agents
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Propantheline and glycopyrrolate
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Do tertiary anticholinergics or quaternary anticholinergics cross into the brain
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tertiary agents cross
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CNS effects of anticholinergics
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Excitement or sedation depending on dosage
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Anticholinergic effects on exocrine glands
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Decreased flow and volume of secretions
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Smooth muscle effects of anticholinergics
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Bronchodilation delayed gastric emptying, decreased motility
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Anticholinergic eye effects
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Mydriasis and cycloplegia
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Anticholinergic cardiovascular effects
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Tachycardia with large doses. May get bradycardia with small doses
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Adverse reactions to anticholinergics
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Xerostomia, photophobia, blurry vision, tachycardia, fever, GU/GI stasis, delerium, hallucinations, convulsions
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Contraindications to anticholinergics
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Narrow-angle glaucoma, prostatic hypertrophy, GI or GU obstruction or retention, Cardiovascular disease
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Uses of anticholinergics
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preoperative medication to prevent heart slowing and decrease airway secretions, GI motility disorders, eye exam, reduction of parkinson-like movements, motion sickness
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Two major neurotransmitters in SNS
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Norepinephrine/Epinephrine
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Which neurotransmitter is most commonly released at the terminal nerve endings in the SNS
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Norepinephrine
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What is generally released in the larger amounts from the adrenal medulla
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Epinephrine
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Dopamine receptors tend to be found in these areas
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brain, splanchnic/renal vessels
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A term given for NE, epi, dopamine, isoproterenol
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Catecholamine
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Adrenergic drugs can work in one of these three ways:
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Direct acting on receptor site.
Indirect acting by causing release of NE. Mixed which can do both |
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Name the two enzyme systems which metabolize epinephrine and NE
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Monoamine oxidase (MAO), and catechol-O-methyltransferase (COMT)
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Name three types of adrenergic receptors
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Alpha, Beta, Dopamine
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Alpha -1 receptors cause:
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Vasoconstriction
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Beta-1 receptors cause:
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Increase HR & inotropy of heart
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Beta-2 receptors cause:
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Smooth muscle relaxation (bronchodilation & vasodilation)
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Epinephrine stimulates what adrenergic receptors?
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Alpha and Beta
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NE and phenylephrine stimulate primarily what receptors
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Alpha
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Isoproterenol stimulates the ________ receptors
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Beta
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CNS effects of sympathomimetic drugs (adrenergic agents)
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Excitation, anxiety, apprehension, restlessness, and tremor
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Adrenergic drug heart effects
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Increase HR/inotropy. Effects vary somewhat by drug
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Adrenergic blood vessel responses
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Alpha causes vasoconstriction in skin/mucosa. Beta stimulation causes vasodilation in skeletal muscle
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BP response to adrenergic drugs
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Increase in BP`
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Eye effects of adrenergics
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Decrease in IOP and mydriasis
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Respiratory effects of adrenergics
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Beta-2 receptor stimulation causes bronchodilation
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Metabolic effects of adrenergics
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Hyperglycemia due to increased glyogenolysis/decreased insulin release, lipolysis, and gluconeogenesis. (Increase in BMR)
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Salivary gland effects
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Submaxillary/sublingual-thick saliva. Parotid no SNS innervation but still decreased saliva production
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Adrenergic relative contraindications
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Hypertension, angina, MI history, hyperthyroidism, arrhythmias
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Uses of Adrenergic drugs
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Vasoconstriction for longer local anesthetic effect and hemostasis, decongestion, shock, bronchodilation, CNS stimulation
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A disease in which spontaneous deep sleep can occur at any time
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Narcolepsy
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Adrenergic blockers cause what vascular effect
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Vasodilation, decreased PVR, decrease BP with reflex vagal tachycardia
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