Complete Test Bank ECGs Made Easy 6th Edition Barbara Questions & Answers with rationales (Chapter 1-10)

Testbank for ECGsMadeEasy
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7thEditionbyBarbara JAehlert
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Chapters1-10 v v v

,ECGs Made Easy 7th Edition by Barbara Aehlert Test Bank
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Table of Contents:
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Chapter1.Anatomy &Physiology
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Chapter2.Basic Electrophysiology
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Chapter3.Sinus Mechanisms
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Chapter4.AtrialRhythms
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Chapter5.Junctional Rhythms
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Chapter6.VentricularRhythms
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Chapter7.Atrioventricular Blocks
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Chapter8.PacemakerRhythms
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Chapter9.Introduction to the 12-Lead ECG
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Chapter10.Post-Test
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,Chapter 01: Anatomy and Physiology
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Aehlert:ECGsMadeEasy,7thEdition
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MULTIPLECHOICE v




1. The apex of the heart is formed bythe
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a. tip of the leftventricle
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b. tip of the right atrium
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c. right atrium and right ventricle v v v v




d. left atrium and left ventricle
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ANSWER: A v




Theheart’s apex, or lower portion, is formed bythetip ofthe left ventricle.The apex lies justabove the
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diaphragm, between the fifth and sixth ribs, in the midclavicular line.
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OBJ: Identifythe surfaces of the heart.
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2. The left atrium receives blood from the
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a. pulmonaryveins v




b. aorta
c. pulmonaryarteries v




d. inferiorvena cava v v




ANSWER: A v




The left atrium receives freshlyoxygenated blood from the lungs via the right and
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leftpulmonaryveins.
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OBJ: Identifyanddescribe the chambers of the heart andthe vessels thatenteror leave each.
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3. The anterior surface of the heart consists primarilyofthe
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a. left atrium v




b. right atrium v




c. leftventricle v




d. right ventricle v




ANSWER: D v




The front (anterior) surface of the heart lies behind the sternum and costal cartilages. It is formed by
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portions of the right atrium and the left and right ventricles. However, because the heart is tilted
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slightlytoward the left in the chest, the right ventricle is the area of the heart thatlies most directly
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behind the sternum.
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OBJ: Identifythe surfaces of the heart.
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4. Blood pressureis determined by
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a. strokevolume; heart rate v v v




b. heartrate; cardiac output v v v




c. cardiacoutput;peripheral vascularresistance v v v v




d. strokevolume;peripheral vascularresistance v v v v




ANSWER: C v




Bloodpressureis equal to cardiac output multiplied byperipheralvascular resistance.
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, OBJ: Identifyandexplain the components of blood pressure and cardiacoutput.
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5. The right atrium receives venousblood fromthe head, neck, and thorax via the ,fromthe
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vremainder of the bodyvia the , and from the heart via the v v v v v v v v v v v .
a. coronarysinus; superior vena cava; inferior vena cava v v v v v v v




b. superior venacava; coronarysinus; inferior vena cava v v v v v v v




c. inferiorvena cava; superiorvena cava; coronarysinus v v v v v v v




d. superior venacava; inferior vena cava; coronarysinus v v v v v v v




ANSWER: D v




The right atrium receives blood low in oxygen from the superior vena cava, which carries blood
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from the head and upper extremities; the inferior vena cava, which carries blood fromthe lower
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body; and the coronarysinus, which is the largest vein thatdrains the heart.
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OBJ: Identifyanddescribe the chambers of the heart andthe vessels thatenteror leave each.
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6. The heart is divided into
v v v v chambers but functions as a v v v v -sided pump. v




a. two; four v




b. three;two v




c. four; two v




d. four; three v




ANSWER: C v




The heart has four chambers: two atria and two ventricles.The right and left sidesof theheartare
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separated by an internal wall of connective tissue called a septum. The interatrial septum separates
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the right and left atria. The interventricular septum separates the right and left ventricles. The septa
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separate the heart into two functional pumps. The right atrium and right ventriclemake up one
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pump.The left atrium and left ventricle make up the other.
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OBJ: Identifyanddescribe the chambers of the heart andthe vessels thatenteror leave each.
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7. Stimulation ofalpha1 receptorsresults in v v v v v .
a. increasedheart rate v v




b. peripheralvasoconstriction v




c. constriction ofbronchial smooth muscle v v v v




d. increasedforce ofmyocardial contraction v v v v




ANSWER: B v




Alpha1 receptors arefound intheeyes, blood vessels, bladder,and malereproductive
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organs.Stimulation of alpha1 receptor sites results in constriction.
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OBJ: Compareandcontrast theeffectsofsympatheticand parasympatheticstimulation of theheart.
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8. Whichside of the heart is alow-pressuresystem that pumps venous blood to thelungs?
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a. Left
b. Right
ANSWER: B v




The job of the right side of the heart is to pump unoxygenated blood to and through the lungs to the left
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sideofthe heart.This is called thepulmonary circulation.The right side ofthe heartis a low-pressure
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system.
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