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63 Cards in this Set

  • Front
  • Back
parasympathetics- location and where do they synapse?
cranial and sacral and synapse near or on target organ
sympathetics originate? synpase?
thoraci and lumbar and synpase around spinal cord
what are catecholamines
NE and Epi
what is the rate limiting step in catecholamin synthesis
tyrosine hydroxylase( tyrosine to dopa)
Ach and M1 and M2 receptors work in what way-
Gq- phospholipase C
Ach and M2 work in what way?
Gi= inhibition of adenylyl cyclase
what does M3 do?
releases NO for smooth muscle relaxation
alpha 1 receptors are pre or post junctional
post junctional
what do alpha-1 receptors do
vasoconstriction, GI relaxation, mydriasis,
what do alpha 2 receptors do
inhibition of release of NE and EPI, inhibition of insulin release and inhibituon of lipolysis
what catecholamines do alpha receptors work with
epinephrine=NE>isoproterenol
alpha 1 receptors with M1 and M3 work with hat G protein?
Gq
alpha 2 receptors with M2 work with what receptor
Gi
Beta 1 receptors do what
increased contractility and coduction velocity and renin secretion
react with isoproterenol>EPI= NE
B2 receptors do what
mediate vasodilaton and intestinal,bronchial, uterine smooth muscle relaxation
react with isoproterenol= epinephrine> norepinephrine
B work with what G protein?
Gs
direct acting muscarinic cholinoreptor agonists act like what?
parasympatheticmimetics
what do muscarinics do to eyes
contract circular smooth muscle of cilliary muscle to decrease intracular pressure and miosis by contracting iris sphincter (tiny pupils)
what do muscarinics do for CV system
negative ionotropic effect, decreases conduction velocity at AV node, vasodilation and increases NO for relaxation of smooth muscle and perhaps reflex tachycardia
pilocarpine, bethanechol, carbechol
muscarinics!
muscarinics do what to bladder?
relax sphnicter and contract ureter and bladder
muscarinic on respiratory system=
bronchoconstriction
bethanecol
prevents urinary retension
methacholine
used for methacholine challlenge for asthma
pilocarpine- used for
glaucoma, sjogren syndrome
contraindcated in astrhma, parkinsons, peptic ulcer, cardiac dz
muscarinics
edrophonium, neostigmine, physostigmine, echothiophate, isoflurophate
indirect acting parasympathomimetics
indirecting parasympathomimetics MOA
inhibit AchE and increase Ach
neostigmine or physostigmine enters CNS?
physostigmine
what will reverse the AchE inhibitors?
pralidoxime (2PAM)
AchE inhibitors are used for what diseases?
glaucoma, myasthenia gravis, alzheimers, atropin poisoning
adverse effects of AchE inhibiters
muscle weakness, cramps, fasculations, bronchial secretions, coma, CV collapse, respiratory failure
poisoned with organophosphates by the biscuit farmer from quelf...whats the antidote?
atropine and pralidoxime (2PAM)
atropine, scopolamine, propantheline, trimethaphan, cisatracurium, succinylcholine
muscarinic receptor antagonists
what do anti muscarinics do to eye, CV, GI, lung?
cycloplegia, mydriasis, increased HR, decreased salvation, reduce peristalsis, bronchodilate and anhidrosis
muscarinic antagonists treat
urinary urgency, parkinsons, asthma, COPD
adverse effects of muscarinic blockers-
mydriasis, dry eyes, dry mouth, dry skin, temp, delirum- "hot as a hare, dry as a bone, red as a beet and mase and a hatter, blind as a bat"
the curiums- cisatracurium, mivacurium, doxacurium, pancrurium, vecurium
skeletal muscle relaxants nondepolarizing
in surgery and you gave too much of a curium- muscle relaxant how can you fix this?
neostigmine
the only depolarizing skeletal relaxant
succinylcholine
side effects of succinylcholine
hyperkalemia, malignant hyperthermia, bradycardia, increased intraocular pressure
tx of malignant hyperthermia
dantrolene
benzodiazepines MOA
GABA
epinephrine activates what receptors
B1, b2 and alpha 1 receptors
NE works at what receptors-
B1 and alpha receptors
epinephrine decreases total peripheral resistance and diastolic pressure why?
Beta 2 receptors!
what happens to dopamine at low and high doses?
low doses= increased systolic pressure and positive ionotropic
high doses= vasoconstriction and activates alpha receptors and reflex decrease in heart rate
dobutamine works at what receptor
B1
terbutaline, albuterol, metaproterenol, salmeterol, bitolterol, levalbuterol, pirbuterol
B2 agonists
isoproterenol
B agonist and little bit alpha
phenylephrine, methoxamine, metaraminol
alpha 1 agonist
chlonidine, methyldopa, uanabenz, guanfacine
alpha 2 agonists
what do you use in shock?
low doses of dobutamine or dopamine
whats used for CHF
dobutamine
phentolamine, prazosin, labatelol, phenoxybenzamine
alpha antagonists
alpha blockers used for
pheochromocytoma, hypertension, raynads and erectile dysfunction
propanolol, metoprolol, betaxolol, bisoprolol, atenolol, acebutolol, esmolol,
B blockers
labetolol and carvedilol
alpha and B blockers
timolol, levobunolol, nadolol, sotalol,
nonselective B anatgonists
sotalol use
arrythmias
pindolol, cartelol, penbutolol
non selective antagnosist with partial B2 agonist activity
B blocker uses
hypertension
MI
atrial andventricular arrythmias
angina
obstructive cardiomyopathy
glaucoma
hyperthyroidism
migarine prophylaxis
dont use B blockers in
asthmatics, be careful in diabetics and heart failure patients