Exam (elaborations)
Nurs 5220 Pharmacology NA CV Exam Questions and Answers
- Course
- Institution
Nurs 5220 Pharmacology NA CV Exam Questions and Answers
[Show more]
Content preview
Nurs 5220 Pharmacology NA CV ExamQuestions and Answers
What iis ian iaction ipotential? i- iCorrect iAnswers i-Fundamental iprocess iunderlying iall
ielectrical iactivity iin ithe iheart.
What iis ithe iresting imembrane ipotential? i- iCorrect iAnswers i--94 imV, iclose ito ithe
iequilibrium ipotential ifor iK+.
What iare icardiac imuscle ifibers? i- iCorrect iAnswers i-Cardiac icells ithat icontract iand
iare iconnected iin iseries ito ione ianother iwith igap ijunctions.
How idoes ithe iaction ipotential idevelop iin icardiac imuscle ifibers? i- iCorrect iAnswers i-It
idevelops iin ia imembrane, iand icurrent iflows ifrom ione icell ito ianother ivia igap ijunctions.
What iare igap ijunctions? i- iCorrect iAnswers i-Intercellular ichannels ithat ipermit idirect
icell-cell itransfer iof iions irapidly, iwith ilow iresistance.
What ihappens iif icurrent iflow iis isufficient iin igap ijunctions? i- iCorrect iAnswers i-
Sequential idepolarization ioccurs ifrom icell ito icell.
What iis iexcitation-contraction icoupling? i- iCorrect iAnswers i-The igeneration iand
ipropagation iof ielectrical iimpulses iin ithe iheart ithat iresults iin ithe imechanical iresponse
iof icardiomyocyte icontraction.
What iare iT itubules? i- iCorrect iAnswers i-Invaginations iof ithe imyocyte isurface ithrough
iwhich ithe iaction ipotential ispreads iinto ithe icell.
What iis icalcium-induced icalcium irelease? i- iCorrect iAnswers i-Depolarization ileads ito
ian iinflux iof iCa2+ ivia ia ivoltage-gated iCa2+ ichannel, iwhich ithen ibinds ito ithe
iRyanodine iReceptor i(RyR2) iand icauses irelease iof iCa2+ ifrom ithe isarcoplasmic
ireticulum i(SR) iinto ithe icytoplasm.
What ihappens iwhen iCa2+ ibinds iwith itroponin? i- iCorrect iAnswers i-It iproduces imuscle
icontraction.
,How iis icytoplasmic iCa2+ itaken iback iinto ithe iSR? i- iCorrect iAnswers i-Via ian iATP
ipump.
How ican iyou iregulate icardiac iCa2+ idynamics? i- iCorrect iAnswers i-With
ipharmacologic iagents, iwhich ican ichange ithe imechanical ifunction iof ithe iheart.
What iare ithe iprimary ifunctions ialtered iby icalcium? i- iCorrect iAnswers i-Inotropy
i(contractility) iand ilusitropy i(relaxation).
What iis ivasoregulation? i- iCorrect iAnswers i-The iregulation iof ivascular ismooth imuscle
i(VSM) itone, icritical ifor imaintaining iblood ipressure iand iproper idistribution iof itissue
iblood iflow.
What iis ivasodilation? i- iCorrect iAnswers i-Primarily iassociated iwith idecreased icalcium.
What iis ithe icAMP ipathway? i- iCorrect iAnswers i-Activation iof ithe iG-Protein icAMP
ipathway iinhibits iSR iCa2+ irelease.
What iis ithe icGMP ipathway? i- iCorrect iAnswers i-Pathway iactivated iby initric ioxide ithat
iinhibits iCa2+ irelease ifrom iSR
What iis ivasoconstriction? i- iCorrect iAnswers i-Constriction iof iblood ivessels
What iis ithe iPLC ipathway? i- iCorrect iAnswers i-Pathway ithat ievokes iCa2+ irelease
ifrom iSR
What iis ithe iendothelium? i- iCorrect iAnswers i-Single ilayer iof ithin icells ilining ithe
isurface iof iblood ivessels
How idoes ithe iendothelium imodulate ivascular ismooth imuscle itone? i- iCorrect iAnswers
i-Via irelease iof iendothelium iderived irelaxing ifactors iand iendothelium iderived
icontracting ifactors
What iare ithe ideterminants iof icardiac ioutput? i- iCorrect iAnswers i-Filling ipressure iand
icompliance
What iis icardiac ioutput? i- iCorrect iAnswers i-Volume iof iblood ipumped ito ibody itissues
iper iminute
What iis ithe inormal ivalue ifor icardiac ioutput? i- iCorrect iAnswers i-5-6 iL/min
What iis icardiac iindex? i- iCorrect iAnswers i-Normalized ivalue ifor icardiac ioutput ibased
ion ibody isurface iarea
What iis ithe inormal ivalue ifor icardiac iindex? i- iCorrect iAnswers i-2.5-3.5 iL/min/m2
, What idetermines iheart irate? i- iCorrect iAnswers i-Rhythmic ispontaneous idepolarization
iof ipacemaker icells iin iSA inode
How iis iheart irate imodulated? i- iCorrect iAnswers i-By ithe iautonomic inervous isystem
What iis istroke ivolume? i- iCorrect iAnswers i-Difference ibetween iend-diastolic ivolume
iand iend-systolic ivolume
What iinfluences istroke ivolume? i- iCorrect iAnswers i-Changes iin iend-diastolic ivolume,
imyocardial icontractility, iand iafterload
What iis ithe iFrank iStarling iLaw? i- iCorrect iAnswers i-Strength iof icontraction iis
iproportional ito ithe iinitial ilength iof icardiac imuscle ifiber
How idoes icontractility iaffect ithe imyocardium? i- iCorrect iAnswers i-Ability ito iperform
imechanical iwork iindependent iof ichanges iin ipreload ior iafterload
What iis iafterload? i- iCorrect iAnswers i-Force iopposing ifiber ishortening iduring
iventricular iejection
What iis ithe iLaw iof iLaplace? i- iCorrect iAnswers i-Tension ior istress iin ithe iventricular
iwall iduring iejection
What iis ithe irelationship ibetween ithe itension iwithin ia ifilled isphere iand ithe ithickness iof
iits iwall? i- iCorrect iAnswers i-Increasing ithe ithickness iof ithe isphere's iwall idecreases
ithe itension iwithin iit.
How iis iafterload irelated ito iintraventricular ipressure iand isize? i- iCorrect iAnswers i-
Afterload iis idirectly irelated ito iintraventricular ipressure iand isize.
How iis iafterload irelated ito iwall ithickness? i- iCorrect iAnswers i-Afterload iis iinversely
irelated ito iwall ithickness.
What iare ithe ideterminants iof imyocardial ioxygen isupply? i- iCorrect iAnswers i-Coronary
iblood iflow.
When idoes imost imyocardial iperfusion ioccur? i- iCorrect iAnswers i-Most imyocardial
iperfusion ioccurs iduring iheart irelaxation i(diastole).
What iis ithe imain isource iof ioxygen idemand ifor ithe imyocardium? i- iCorrect iAnswers i-
Myocardium idepends ialmost iexclusively ion iaerobic imetabolism.
What ipercentage iof ibasal ioxygen iconsumption idoes imyocardial ioxygen idemand
iaccount ifor? i- iCorrect iAnswers i-Myocardial ioxygen idemand iaccounts ifor i7% iof ibasal
ioxygen iconsumption.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller mereka. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79064 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now