Ecgs made easy 6th edition by barbara aehlert test bank (1)

Test bank for ECGs Made Easy
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7th Edition by Barbara J Aehlert
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Chapters 1 - 10 m m m

,ECGs Made Easy 7th Edition by Barbara Aehlert Test Bank
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Table of Contents:
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Chapter 1. Anatomy & Physiology
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Chapter 2. Basic Electrophysiology
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Chapter 3. Sinus Mechanisms
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Chapter 4. Atrial Rhythms
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Chapter 5. Junctional Rhythms
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Chapter 6. Ventricular Rhythms
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Chapter 7. Atrioventricular Blocks
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Chapter 8. Pacemaker Rhythms
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Chapter 9. Introduction to the 12-Lead ECG
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Chapter 10. Post-Test
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,Chapter 01: Anatomy and Physiology
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Aehlert:ECGs Made Easy,7thEdition
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MULTIPLECHOICE m




1. The apex of the heart is formed bythe
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a. tip of the left ventricle m m m m




b. tip of the right atrium m m m m




c. right atrium and right ventricle m m m m




d. left atrium and left ventricle m m m m




ANSWER: A m




The heart’s apex, or lower portion, is formed bythe tip of the left ventricle. The apex lies justabove
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the 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
m m m m m m .
a. pulmonaryveins m




b. aorta
c. pulmonaryarteries m




d. inferior vena cava m m




ANSWER: A m




The left atrium receives freshlyoxygenated blood from the lungs via the right and left
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pulmonaryveins.
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OBJ: Identifyand describe the chambers of the heart and the vessels that enter or leave each.
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3. The anterior surface of the heart consists primarilyof the
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a. left atrium m




b. right atrium m




c. leftventricle m




d. right ventricle m




ANSWER: D m




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




b. heart rate; cardiac output m m m




c. cardiac output; peripheral vascular resistance m m m m




d. stroke volume; peripheral vascular resistance m m m m




ANSWER: C m




Blood pressure is equal to cardiac output multiplied byperipheral vascular resistance.
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, OBJ: Identifyand explain the components of blood pressure and cardiacoutput.
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5. The right atrium receives venous blood fromthe head, neck, and thorax via the
m m m m m m m m m m m m m ,from
m




the remainder of the body via the
m m , and from the heart via the m m m m m m m m m m m .
a. coronarysinus; superior vena cava; inferior vena cava m m m m m m m




b. superior vena cava; coronarysinus; inferior vena cava m m m m m m m




c. inferior vena cava; superior vena cava; coronarysinus m m m m m m m




d. superior vena cava; inferior vena cava; coronary sinus m m m m m m m




ANSWER: D m




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
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lower body; and the coronarysinus, which is the largest vein that drains the heart.
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OBJ: Identifyand describe the chambers of the heart and the vessels that enter or leave each.
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6. The heart is divided into
m m m m chambers but functions as a m m m m -sided pump. m




a. two; four m




b. three;two m




c. four; two m




d. four; three m




ANSWER: C m




The heart has four chambers: two atria and two ventricles.The right and left sides of the heartare
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separated by an internal wall of connective tissue called a septum. The interatrial septum
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separates the right and left atria. The interventricular septum separates the right and left
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ventricles. The septa separate the heart into two functional pumps. The right atrium and right
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ventricle make up one pump.The left atrium and left ventricle make up the other.
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OBJ: Identifyand describe the chambers of the heart and the vessels that enter or leave each.
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7. Stimulation of alpha1 receptors results in m m m m m .
a. increased heart rate m m




b. peripheral vasoconstriction m




c. constriction of bronchial smooth muscle m m m m




d. increased force of myocardial contraction m m m m




ANSWER: B m




Alpha1 receptors are found in the eyes, blood vessels, bladder, and male reproductive organs.
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Stimulation of alpha1 receptor sites results in constriction.
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OBJ: Compareand contrast the effects of sympatheticand parasympatheticstimulation of the heart.
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8. Which side of the heart is a low-pressure system that pumps venous blood to the lungs?
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a. Left
b. Right
ANSWER: B m




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