TEST BANK For ECGs Made Easy, 7th Edition by Barbara J Aehlert, Verified Chapters 1 - 10, Complete Newest Version TEST BANK For ECGs Made Easy, 7th Edition by Barbara J Aehlert, Verified Chapters 1 - 10, Complete Newest Version TEST BANK For ECGs Made Easy, 7th Edition by Barbara J Aehlert, Verifie...
1. Thelapexloflthelheartlislformedlbylthe .
a. tiploflthelleftlventricle
b. tiploflthelrightlatrium
c. rightlatriumlandlrightlventricle
d. leftlatriumlandlleftlventricle
ANSWER:l A
Thelheart’slapex,lorllowerlportion,lislformedlbyltheltiploflthelleftlventricle.lThelapexlliesljustlabov
eltheldiaphragm,lbetweenlthelfifthlandlsixthlribs,linlthelmidclavicularlline.
OBJ:l Identifylthelsurfacesloflthelheart.
2. Thelleftlatriumlreceiveslbloodlfromlthe .
a. pulmonarylveins
b. aorta
c. pulmonarylarteries
d. inferiorlvenalcava
ANSWER:l A
Thelleftlatriumlreceiveslfreshlyloxygenatedlbloodlfromlthellungslvialthelrightlandlleftlpul
monarylveins.
3. Thelanteriorlsurfaceloflthelheartlconsistslprimarilyloflthe .
a. leftlatrium
b. rightlatrium
c. leftlventricle
d. rightlventricle
ANSWER:l D
Thelfrontl(anterior)lsurfaceloflthelheartllieslbehindlthelsternumlandlcostallcartilages.lItlislformedlb
ylportionsloflthelrightlatriumlandlthelleftlandlrightlventricles.lHowever,lbecauselthelheartlisltiltedls
lightlyltowardlthelleftlinlthelchest,lthelrightlventriclelislthelarealoflthelheartlthatllieslmostldirectlylb
ehindlthelsternum.
OBJ:l Identifylthelsurfacesloflthelheart.
4. Bloodlpressurelisldeterminedlby multipliedlby .
a. strokelvolume;lheartlrate
b. heartlrate;lcardiacloutput
c. cardiacloutput;lperipherallvascularlresistance
d. strokelvolume;lperipherallvascularlresistance
ANSWER:l C
Bloodlpressurelislequalltolcardiacloutputlmultipliedlbylperipherallvascularlresistance.
5. Thelrightlatriumlreceiveslvenouslbloodlfromlthelhead,lneck,landlthoraxlvialthe
,lfromlthelremainderloflthelbodylvialthe
,landlfromlthelheartlvialthe .
a. coronarylsinus;lsuperiorlvenalcava;linferiorlvenalcava
b. superiorlvenalcava;lcoronarylsinus;linferiorlvenalcava
c. inferiorlvenalcava;lsuperiorlvenalcava;lcoronarylsinus
d. superiorlvenalcava;linferiorlvenalcava;lcoronarylsinus
ANSWER:l D
Thelrightlatriumlreceiveslbloodllowlinloxygenlfromlthelsuperiorlvenalcava,lwhichlcarrieslblood
lfromlthelheadlandlupperlextremities;lthelinferiorlvenalcava,lwhichlcarrieslbloodlfromlthellowerl
6. Thelheartlisldividedlinto chamberslbutlfunctionslasla -sidedlpump.
a. two;lfour
b. three;ltwo
c. four;ltwo
d. four;lthree
ANSWER:l C
Thelheartlhaslfourlchambers:ltwolatrialandltwolventricles.lThelrightlandlleftlsidesloflthelheartlarels
eparatedlbylanlinternallwallloflconnectiveltissuelcalledlalseptum.lThelinteratriallseptumlseparates
lthelrightlandlleftlatria.lThelinterventricularlseptum lseparateslthelrightlandlleftlventricles.lThelsep
7. Stimulationloflalpha1lreceptorslresultslin .
a. increasedlheartlrate
b. peripherallvasoconstriction
c. constrictionloflbronchiallsmoothlmuscle
d. increasedlforceloflmyocardiallcontraction
ANSWER:l B
Alpha1lreceptorslarelfoundlinltheleyes,lbloodlvessels,lbladder,landlmalelreproductivelorgans.lSti
mulationloflalpha1lreceptorlsiteslresultslinlconstriction.
8. Whichlsideloflthelheartlislallow-pressurelsystemlthatlpumpslvenouslbloodltolthellungs?
a. Left
b. Right
ANSWER:l B
Theljobloflthelrightlsideloflthelheartlisltolpumplunoxygenatedlbloodltolandlthroughlthellungsltolthel
leftlsideloflthelheart.lThislislcalledlthelpulmonarylcirculation.lThelrightlsideloflthelheartlislallow-
pressurelsystem.
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