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76 Cards in this Set

  • Front
  • Back
What tone is the predominant type in systemic circulation, parasympathetic or sympathetic?
sympathetic
What tone is the predominant type in the heart, parasympathetic or sympathetic?
parasympathetic
What tone is the predominant type in iris and ciliary muscle, parasympathetic or sympathetic?
parasympathetic
What tone is the predominant type in GI tract parasympathetic or sympathetic?
parasympathetic
What tone is the predominant type in the bladder parasympathetic or sympathetic?
parasympathetic
What tone is the predominant type in salivary glands, parasympathetic or sympathetic?
parasympathetic
What tone is the predominant type in sweat glands, parasympathetic or sympathetic?
sympathetic
What is the physiology behind myasthinia gravis?
antibodies are blocking the nicotinic receptors at the neuromuscular junction.
What can happen if you haev too much Ach in the NM junction for too long?
depolorization block, paralysis of muscle
How many ACh molecules must attach to a nicotinic receptor to activate it?
2
What kind of receptors are found in blood vessels, muscarinic or nicotinic?
muscarinic
What drug would you use for relaxing the larynx for intubation?
succinylcholine, rocuronium can be substituted
T/F Succinylcholine is a depolarizing neuromuscular blocker.
true
Macrophages have what type of ACH receptor? Stimulating these causes what reaction?
nicotinic, anti inflammatory
GIve an example of a false transmitter?
Tyramine, Guanethidine=displaces stored NE
How do tricyclic antidepressants work?
by blocking uptake 1 which usually brings NE back into the presynaptic cleft
Where do you find alpha-1 adrenergic receptors?
in the vasculator
Where do you find alpha-2 adrenergic receptors?
presynaptic
Where do you find beta-1 adrenergic receptors?
heart
Where do you find beta-2 adrenergic receptors?
smooth muscle
What receptors does norepinephrine stimulate? epinephrine?
alpa-1, alpha-2, and beta-1
epinephrine stimulates all these and beta-2
What receptor/s does dopamine bind and whats its effect (agonist/antagonist)?
alpha-1 agonist, beta-1 agonist
What receptor/s does phenylephrine bind and whats its effect (agonist/antagonist)?
alpha-1 agonist
What receptor/s does methoxamine bind and whats its effect (agonist/antagonist)?
alpha-1 agonist
What receptor/s does clondine bind and whats its effect (agonist/antagonist)?
alpha-2 agonist
What receptor/s does alpha-methyl-NE bind and whats its effect (agonist/antagonist)?
alpha-2 agonist
What receptor/s does oxymetazoline bind and whats its effect (agonist/antagonist)?
alpha-1 and alpha-2 agonist
What receptor/s does isoproterenol bind and whats its effect (agonist/antagonist)?
beta-1 and beta-2 agonist
What receptor/s does dobutamine bind and whats its effect (agonist/antagonist)?
beta-1 agonist
What receptor/s does terabutaline bind and whats its effect (agonist/antagonist)?
beta-2 agonist
What receptor/s does albuterol bind and whats its effect (agonist/antagonist)?
beta-2 agonist
What receptor/s does labetolol bind and whats its effect (agonist/antagonist)?
beta-1 and beta-2 antagonist
What receptor/s does phentolamine bind and whats its effect (agonist/antagonist)?
alpha-1 and alpha-2 antagonist
What receptor/s does phenoxybenzamine bind and whats its effect (agonist/antagonist)?
alpha-1 and alpha-2 antagonist
What receptor/s does prazosin bind and whats its effect (agonist/antagonist)?
alpha-1 antagonist
What receptor/s does yohimbine bind and whats its effect (agonist/antagonist)?
alpha-2 antagonist
What receptor/s does propranolol bind and whats its effect (agonist/antagonist)?
beta-1 and beta-2 antagonist
What receptor/s does timolol bind and whats its effect (agonist/antagonist)?
beta-1 and beta-2 antagonist
What receptor/s does nadolol bind and whats its effect (agonist/antagonist)?
beta-1 and beta-2 antagonist
What receptor/s does atenolol bind and whats its effect (agonist/antagonist)?
beta-1 antagonist
What receptor/s does butoxamine bind and whats its effect (agonist/antagonist)?
beta-2 antagonist
What receptor/s does metoprolol bind and whats its effect (agonist/antagonist)?
beta-1 antagonist
Will an alpha-1 agonist increase or decrease heart rate?
decrease because it will vasoconstrict, giving a higher BP and activating baroreceptors
Where do you find cGMP?
vascular smooth muscle, intestinal mucosa
How do methylxanthines work in relieving Asthma and COPD symptoms?
inhibit cyclic nucleotide PDE 3 & 4, thereby preventing breakdown of cyclic AMP and cyclic GMP. PDE-3 is found in airway smooth muscle, PDE-4 involved in synthesis of inflammatory mediators
What effect can PDE 5 inhibitors have on platelets?
antagonizes platelet aggregation by inhibiting PDE-3
On a very basic level, what do PDE inhibitors do?
cGMP -------------->GMP
PDE

by inhibiting PDE, more cGMP stays active
Your patient is hypokalemic. How will this effect the digoxin they are on?
It will potentiate and cause increased digoxin effects.
Your patients EKG shows a saw tooth pattern with multiple p-waves. whats he got?
atrial flutter; anitcoagulants, digoxin, beta blockers, procainamide
Your patients EKG shows no p-waves. whats he got?
atrial fibrillation;
What class is procainamide?
IA
What do class I antiarrhythmic drugs do?
sodium channel blockade
What do class IA antiarrhythmic drugs do? give an example
block open Na channels, prolong AP duration, blocks K channels; quinidine, procainamide, disopyramide
What do class IB antiarrhythmic drugs do? give an example
prolong refractory period of NA channels; lidocaine
What do class II antiarrhythmic drugs do? Give an example
beta blockers; propranolol, esmolol, acebutolol, sotalol
What do class III antiarrhythmic drugs do? Give an example.
potassium channel blockers; Amiodarone, Bretylium, Ibutilide
What is the mechanism and clinical application of sidenafil, varenadil, tadalafil?
PDE-5 inhibitors, boners!!!! (they FIL your penis with blood)
Name two examples of class IC antiarrhythmic drugs.
flecainide, propafenone
How is esmolol metabolized?
RBCs
How do you treat V-tach?
Amiodarone and magnesium are the important ones according to the TA
How do you treat ventricular fibrillation?
defibrillation, cause you be screwed
What part of the nephron do the most effective diuretics act at? give some examples.
loop of henle; furosemide, bumetanide
How will hypoalbuminemia affect loop diuretics?
cause a decreased effect because albumin is necessary for organic anion secretion, so drugs reach kidney slower
What kind of diuretics act on the proximal tubule? give an example
carbonic anhydrase inhibitors; acetazolamide
How does furosemide work in the ascending limb of the loop of Henle?
inhibits Na+-K+-2Cl- cotransport by binding to chloride sites on transporter
How does furosemide decrease pulmonary congestion?
increased prostaglandin E2 synthesis
Which aldosterone antagonist also blocks the Na-H exchanger?
amiloride
How does Dopamine and ANF affect bicarbonate re absorption?
decreases bicarbonate re absorption
What drug will give a relatively modest and self-limited diuresis? It has a sodium clearance level of 4%. where and how does this drug work?
acetazolamide, inhibits carbonic anhydrase mostly in the proximal tubule
How do thiazide diuretics work? where do they work?
inhibiting the Na+-Cl- co transporter in the distal convoluted tubule
What do K+ sparing diuretics act on? Name a direct antagonist in this drug category.
aldosterone; spironolactone
Name an indirect acting aldosterone antagonist and how it works.
amiloride or triamterene work by blocking sodium channels in the luminal membrane of the distal tubule
how do you calculate the volume of distribution?
Vd=amount of drug in body/plasma drug concentration
What are 3 important drugs that follow zero order kinetics?
ethanol, aspirin, phenytoin
How do you calculate half life?
t1/2=(.693 x Vd)/CL
_____ deals with teh effects of the body on the drug
pharmacokinetics