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Chapter 13 pt1
Autonomic Drugs
95
Pharmacology
Professional
04/20/2013

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Term
What are the branches of the nervous system?
Definition
central and peripheral
Term
What are the branches of the peripheral nervous system?
Definition
motor(efferent) and sensory(afferent)
Term
What are the branches of the motor nervous system?
Definition
autonomic and somatic
Term
What are the branches of the autonomic system?
Definition
sympathetic and parasympathetic
Term
What is the name for the parasympathetic nervous system?
Definition
rest and digest
Term
What is the name for the sympathetic nervous system?
Definition
fight or flight
Term
What happens when the parasympathetic nervous system is activated?
Definition
normal physiological responses
Term
What are some examples of normal physiological responses seen with the parasympathetic nervous system?
Definition
-lots of blood to the digestive system
-heart rate/depth and respiration slower
-pupils constrict
-increased SLUD
Term
What is SLUD?
Definition
salivation
lacrimation
urination
defecation
Term
What are some things that occur when the sympathetic/fight or flight system is activsted?
Definition
-decreased digestion
-increased heart rate/respiration
-pupils dilate(better to see far away)
-decreae is SLUD
Term
When does a neutrotransmitter work? What is it?
Definition
-acts as a ligand
-does not do anything until it binds to a receptor
Term
How does the release of a NT at a presynaptic membrane work?
Definition
-action potential reaches axon terminal
-opens voltage-gated Ca2+ channels
-influc of Ca2+ causes fusion of vesicles with presynaptic membrane
-neurotransmitter released into synapse(binds to receptors on the effectors)
Term
What are the two types of receptors in the autonomic nervous system?
Definition
-postganglionic neuron
-effectors
Term
What are postganglionic neurons? Where are the located?
Definition
-all motor neurons
-on dentrites
Term
What are effectors?
Definition
muscles, nerves, etc.
Term
What do preganglionic neurons release? What does this stimulate?
Definition
-release ACh
-stimulates postganglionic
Term
When do the postganglionic then release? What does this do?
Definition
-released ACh
-then stimulates or inhibits an effector
Term
What are the 2 series of neurons in the autonomic nervous system? Where do they get their signals?
Definition
1.preganglionic-gets signal from CNS
2.postganglionic-gets signal from preganglionicl
Term
In the parasympathetic system, is the preganglionic or postganglionic receptor longer? What about the sympathetic?
Definition
1.parasympathetic- pre is longer
2.sympathetic- post is longer
Term
What do postganglionic neurons in the sympathetic system release? What do the effectors have?
Definition
Norepinephrine or epinephrine, effectors have adrenergic(NE) receptors
Term
What does the "effector" do in the parasympathetic nervous system?
Definition
carries out the action(constricts pupils, etc.)
Term
What does ACh stand for? What are its receptors called?
Definition
Acetylchloine, cholinergic receptors
Term
What are the 2 types of cholinergic receptors?
Definition
1.muscarinic
2.nicotinic
Term
What do muscarinic receptors do?
Definition
-contraction of smooth muscle in bronchioles
-increases SLUD
-decreases heart rate
Term
What is the abbreavation for muscarinic receptors? Is it excitatory or inhibitory?
Definition
mACh, can be excitatory or inhibitory
Term
What is the abbreviation for nicotinic receptors? What do they cause? Is it excitatory or inhibitory?
Definition
-nACh
-contraction of skeletal muscles
-alway excitatory
Term
Where are muscarinic receptors found?
Definition
on all effectors in the parastmpathetic effectors but not on neurons
Term
Where are nicotinic receptors found?
Definition
-on postganaglionic dendrites
Term
What are mimetic drugs? lytic/anti/blocker drugs?
Definition
1.mimetic are agonist drugs that act like the natural ligand
2.lytic/anti/blocker drugs are antagonists that shut off the ligand receptor
Term
What are the 2 ANS drug groups?
Definition
1.cholinergic drugs
2.adrenergic drugs
Term
Is a drug binds to mACh will it bind to nACh?
Definition
no
Term
WHat do cholinergic drugs act on?
Definition
parasympathetic neurons or effectors
Term
What are the 2 types of cholinergic drugs?
Definition
1.parasympathomimetics or cholinergic agents
2.parasympatholytics or anticholinergics
Term
What do parasympathomimetics or cholinergic agents do? What about parasympatholytics or anticholinergic?
Definition
1.parasympathomimetics or cholinergic agents INDUCE parasympathetic effects
2.parasympatholytics or anticholinergic BLOCK parasympathetic effects
Term
What do andrenergic drugs do? What are the 2 categories?
Definition
-act on sympathetic neurons or effectors
-mimetics or adrenergic agonists and lytics, adrenergic antagonists or adrenergic blockers
Term
What do parasympathomimetics do?
Definition
induce rest and digest(consrticts pupils, decreases heart rate, constricts bronchioles, increases GI, increases SLUD)
Term
What can parasympathomimetics be used to treat?
Definition
-xerostomia
-urinary retention
-glaucoma
-myasthenia gravis
Term
What does myasthenia gravis cause?
Definition
ptosis(drooping of the eyelid)
Term
What are some conditions treated with parasympathomimetics?
Definition
-Nicotinic receptor activity
-mixed muscarinic and nicotinic receptor activity
-primarily miscarinic receptor activity
-indirect cholinergic agonists
Term
What are Nicotinic receptor activity drugs used to treat? What is it?
Definition
it is nicotine used to treat nicotine addiction, the receptors get stimulated less and less
Term
What are some drug examples that treat Nicotinic receptor activity?
Definition
nicotine- (Commit, Nicoderm CQ)
Term
What is an example of a drug that treats mixed muscarinic and nicotinic activity? What is it used for?
Definition
-carbachol(Miostat)
-for glaucoma, may be used prior to eye surgery
Term
What are some problems caused primarily by muscarinic actitivy?
Definition
-urinary retention, low GI activity
-glaucoma and xerostomia
Term
What is a drug used to treat urinary retention or low GI activity?
Definition
bethanecol-(Urecholine)
Term
What is a drug used to treat glaucoma and xerostomia?
Definition
pilocarpine(Pilocar)
Term
What do indirect cholinergic agonsits treat?
Definition
alzeheimer's disease, myasthenia gravis
Term
What are 2 drugs used to treat alzheimer's disease?
Definition
1.rivastigmine(Exelon)
2.donepezil(Aricept)
Term
What is a drug used to treat myashenia gravis?
Definition
neostigmine
Term
What can cholinesterase inhibitors be used as?
Definition
poisons line insecticides and nerve gases
Term
Where can these poisons be absorbed?
Definition
through the skin and eye
Term
What are some contridictions for parasympathomimetics?
Definition
-asthma
-peptic ulcers
-hyperthyroidism
-GI or urinary obstruction
Term
What are some adverse effects of parasympathomimetics?
Definition
-bradycardia
-pupil constriction
-bronchial constriction
Term
What type of drug is an anticholinergic? What do they do?
Definition
antagonist, block resting and digesting responses
Term
What can anticholinergc drugs be used to treat?
Definition
-motion sickness
-hypersalvation
-urinary incontinence
-irritable bowel syndrome(IBS)
-COPD
-skeletel muscle tension
Term
What muscarinic receptor antagonist is used to treat arrhythmias and COPD?
Definition
atropine
Term
What muscarinic receptor antagonist is used to treat motion sickness?
Definition
scopolamine
Term
What muscarinic receptor antagonist is used to treat allergies?
Definition
diphenhydramine(Benadrly)
Term
What muscarinic receptor antagonist is used to treat urinary incontinence?
Definition
tolterodine tartrate(Detrol)
Term
What are some contradictions to using anticholinergic drugs?
Definition
-glaucoma
-cardiovascular disease
-GI or urinary obstruction
Term
What are some adverse effects of anticholinergic drugs?
Definition
-xerostomia
-blurred vision
-urinary retention
-GI retention/constipation
-decreased respiration
Term
What are the different adrenergic receptors? (4)
Definition
-a1
-a2
-b1
-b2
Term
What do a1 receptors do?
Definition
smooth muscle contraction, pupil dilation
Term
What do a2 receptors do?
Definition
inhibit NE secretion, decreases blood pressure
Term
What do b1 receptors do?
Definition
works with heart, increases heart rate and causes renin secretion(from kidneys, increases blood pressure)
Term
What do b2 receptors do?
Definition
works with lungs, dilates smooth muscle in lungs, and blood vessels serving skeletal muscles
Term
What do b2 receptors also do?
Definition
prevents uterine contraction, prevents preterm labor
Term
What do sympathomimetics do?
Definition
induce fight or flight responses(dilates pupils, increase heart rate, dilates bronchioles, decreases GI activity)
Term
What can sympathomimetics be used to treat?
Definition
-congestion
-asthma
-anaphylaxis
-ADHD
Term
What do direct a agonists treat?
Definition
-shock
-nasal congestion, low blood pressure
Term
What medication is used to treat shock?
Definition
epinephrine
Term
What medication is used to treat nasal congestion/low blood pressure?
Definition
phenylephrine(Sudafed-PE)
Term
What do b agonists treat?
Definition
-anaphylaxis
-asthma
-uterine contractions
-low cardiac output
Term
WHat is a B agonist used to treat anaphylaxis?
Definition
epinephrine
Term
What is a b2 agonist used to treat asthma?
Definition
albuterol (Ventolin, Proventil)
Term
What is a b2 agonist used to treat uterine contractions?
Definition
terbulaline (Brethine)
Term
What is a b agonist used to treat low cardiac output?
Definition
dobutamine
Term
What is a mixed a/b agonist used to treat?
Definition
-apatite suppression
-nasal congestion
Term
What is a mixed a/b agonist used to treat apatite suppression?
Definition
ephedrine
Term
What is a mixed a/b agonist used to treat nasal congestion?
Definition
pseudoephedrine-(Sudafed)
Term
What is an indirect agonist used to treat? Drug example?
Definition
stimulate that treats ADHD- methylphenidate (Ritalin, Adderal)
Term
What are some adverse reactions of sympathomimetics?
Definition
-xerostomia
-cardiac arrhymias
-tachycardia
-hypertension
-tremors
Term
People with what conditions should not take smypathomimetics?
Definition
-angina
-hypertension
-hyperthyroidism
-low gastric motility
Term
What do andrenergic antagonists do? What are they used to treat?
Definition
-prevent fight or flight response -used to treat.. hypertension migraines glaucoma prostate hypertrophy
Term
What do selective a1 blockers treat?
Definition
hypertension, prostatic hypertrophy
Term
What are some a1 blockers used to treat hypertension? (2) What about prostatic hypertrophy?
Definition

1.prazosin(Minipress) 2.doxazosin(Cardura)

prostatic hypertrophy- tamsulosin(Flomax)

Term
What are mixed a/b blockers used to treat?
Definition
hypertension
Term
What is an example of a mixed a/b blocker used to treat hypertension?
Definition
labetalol(Trandate)
Term
What do b-blocker drugs end in? What are the 2 types?
Definition
-end in "olol"
-nonselective and selective(only b1)
Term
What do nonselective b blockers treat?
Definition
hypertension, arrhythmias, migraines, glaucoma,angina
Term
WHat is a nonselective b-blocker used to treat hypertension, angina, arrhythmias, migraines, etc? What is one to treat migraines? Glaucoma? (2)
Definition

1.propranolol(Inderal)

2.timolol(Blocadren-hypertension, migraine, Timoptic- glaucoma)

Term
What are 2 selective B1 blockers that are used to treat hypertension, angina, arrhythemias, etc?
Definition
1.metoprolol(Lopressor, Toprol-XL)
2.atenolol(Tenormin)
Term
What type of hypertensive patient might we prescribed selective b1 blockers?
Definition
one whose blood pressure is not easily controlled
Term
What are some adverse reactions of adrenergic antagonists?
Definition
-decreased systolic blood pressure
-bradycardia
-dizziness
Term
What are some contradictions for adrenergic antagonists?
Definition
-asthma
-hypotension
Term
What is a sympathhetomimetic drug used in dentistry that will impact many types of patients?
Definition
epinephrine
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