x x x x x
7th Edition by Barbara J Aehlert
x x x x x
Chapters 1 - 10
x x x
,ECGs xMade xEasy x7th xEdition xby xBarbara xAehlert xTest xBank
Table xof xContents:
Chapter x1. xAnatomy x& xPhysiology
Chapter x2. xBasic xElectrophysiology
Chapter x3. xSinus xMechanisms
Chapter x4. xAtrial xRhythms
Chapter x5. xJunctional xRhythms
Chapter x6. xVentricular xRhythms
Chapter x7. xAtrioventricular xBlocks
Chapter x8. xPacemaker xRhythms
Chapter x9. xIntroduction xto xthe x12-Lead xECG
Chapter x10. xPost-Test
,Chapter x01: xAnatomy xand
xPhysiology xAehlert: xECGs xMade
xEasy, x7th xEdition
MULTIPLE xCHOICE
1. The xapex xof xthe xheart xis xformed xby xthe .
a. tip xof xthe xleft xventricle
b. tip xof xthe xright xatrium
c. right xatrium xand xright xventricle
d. left xatrium xand xleft xventricle
ANSWER: x A
The xheart’s xapex, xor xlower xportion, xis xformed xby xthe xtip xof xthe xleft xventricle. xThe
xapex xlies xjustxabove xthe xdiaphragm, xbetween xthe xfifth xand xsixth xribs, xin xthe
xmidclavicular xline.
OBJ: x Identify xthe xsurfaces xof xthe xheart.
2. The xleft xatrium xreceives xblood xfrom xthe .
a. pulmonary xveins
b. aorta
c. pulmonary xarteries
d. inferior xvena xcava
ANSWER: x A
The xleft xatrium xreceives xfreshly xoxygenated xblood xfrom xthe xlungs xvia xthe xright
xand xleftxpulmonary xveins.
OBJ: x Identify xand xdescribe xthe xchambers xof xthe xheart xand xthe xvessels xthat xenter xor xleave xeach.
3. The xanterior xsurface xof xthe xheart xconsists xprimarily xof xthe .
a. left xatrium
b. right xatrium
c. left xventricle
d. right xventricle
ANSWER: x D
The xfront x(anterior) xsurface xof xthe xheart xlies xbehind xthe xsternum xand xcostal xcartilages.
xIt xis xformed xby xportions xof xthe xright xatrium xand xthe xleft xand xright xventricles.
xHowever, xbecause xthe xheart xis xtilted xslightly xtoward xthe xleft xin xthe xchest, xthe xright
xventricle xis xthe xarea xof xthe xheart xthatxlies xmost xdirectly xbehind xthe xsternum.
OBJ: x Identify xthe xsurfaces xof xthe xheart.
4. Blood xpressure xis xdetermined xby multiplied xby .
a. stroke xvolume; xheart xrate
b. heart xrate; xcardiac xoutput
c. cardiac xoutput; xperipheral xvascular xresistance
d. stroke xvolume; xperipheral xvascular xresistance
ANSWER: x C
Blood xpressure xis xequal xto xcardiac xoutput xmultiplied xby xperipheral xvascular xresistance.
, OBJ: x Identify xand xexplain xthe xcomponents xof xblood xpressure xand xcardiac xoutput.
5. The xright xatrium xreceives xvenous xblood xfrom xthe xhead, xneck, xand xthorax xvia xthe ,
xfromxthe xremainder xof xthe xbody xvia xthe , xand xfrom xthe
xheart xvia xthe .
a. coronary xsinus; xsuperior xvena xcava; xinferior xvena xcava
b. superior xvena xcava; xcoronary xsinus; xinferior xvena xcava
c. inferior xvena xcava; xsuperior xvena xcava; xcoronary xsinus
d. superior xvena xcava; xinferior xvena xcava; xcoronary xsinus
ANSWER: x D
The xright xatrium xreceives xblood xlow xin xoxygen xfrom xthe xsuperior xvena xcava, xwhich
xcarries xblood xfrom xthe xhead xand xupper xextremities; xthe xinferior xvena xcava, xwhich
xcarries xblood xfromxthe xlower xbody; xand xthe xcoronary xsinus, xwhich xis xthe xlargest xvein
xthat xdrains xthe xheart.
OBJ: x Identify xand xdescribe xthe xchambers xof xthe xheart xand xthe xvessels xthat xenter xor xleave
xeach.
6. The xheart xis xdivided xinto chambers xbut xfunctions xas xa -sided xpump.
a. two; xfour
b. three; xtwo
c. four; xtwo
d. four; xthree
ANSWER: x C
The xheart xhas xfour xchambers: xtwo xatria xand xtwo xventricles. xThe xright xand xleft xsides xof
xthe xheartxare xseparated xby xan xinternal xwall xof xconnective xtissue xcalled xa xseptum. xThe
xinteratrial xseptum xseparates xthe xright xand xleft xatria. xThe xinterventricular xseptum
xseparates xthe xright xand xleft xventricles. xThe xsepta xseparate xthe xheart xinto xtwo
xfunctional xpumps. xThe xright xatrium xand xright xventricle xmake xup xone xpump. xThe xleft
xatrium xand xleft xventricle xmake xup xthe xother.
OBJ: x Identify xand xdescribe xthe xchambers xof xthe xheart xand xthe xvessels xthat xenter xor xleave xeach.
7. Stimulation xof xalpha1 xreceptors xresults xin .
a. increased xheart xrate
b. peripheral xvasoconstriction
c. constriction xof xbronchial xsmooth xmuscle
d. increased xforce xof xmyocardial xcontraction
ANSWER: x B
Alpha1 xreceptors xare xfound xin xthe xeyes, xblood xvessels, xbladder, xand xmale xreproductive
xorgans.xStimulation xof xalpha1 xreceptor xsites xresults xin xconstriction.
OBJ: x Compare xand xcontrast xthe xeffects xof xsympathetic xand xparasympathetic xstimulation xof xthe
xheart.
8. Which xside xof xthe xheart xis xa xlow-pressure xsystem xthat xpumps xvenous xblood xto xthe
xlungs?
a. Left
b. Right
ANSWER: x B
The xjob xof xthe xright xside xof xthe xheart xis xto xpump xunoxygenated xblood xto xand xthrough