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

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

,ECGs Made Easy 7th Edition by Barbara Aehlert Test Bank
Table of Contents:

Chapter 1. Anatomy & Physiology

Chapter 2. Basic Electrophysiology

Chapter 3. Sinus Mechanisms

Chapter 4. Atrial Rhythms

Chapter 5. Junctional Rhythms

Chapter 6. Ventricular Rhythms

Chapter 7. Atrioventricular Blocks

Chapter 8. Pacemaker Rhythms

Chapter 9. Introduction to the 12-Lead ECG

Chapter 10. Post-Test

,Chapter 01: Anatomy and Physiology A
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ehlert:ECGs Made Easy, 7thEdition
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MULTIPLECHOICE c




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




c. right atrium and right ventricle c c c c




d. left atrium and left ventricle
c c c c




ANSWER: A c




The heart’s apex, or lower portion, is formed bythe tip of the left ventricle. The apex lies justabove th
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e diaphragm, between the fifth and sixth ribs, in the midclavicular line.
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OBJ: Identify the surfaces of the heart.
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2. The left atrium receives blood from the
c c c c c c .
a. pulmonaryveins c




b. aorta
c. pulmonaryarteries c




d. inferior vena cava c c




ANSWER: A c




The left atrium receives freshly oxygenated blood from the lungs via the right and leftpulm
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onaryveins. c




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 primarily of the
c c c c c c c c c .
a. left atrium c




b. right atrium c




c. left ventricle c




d. right ventricle c




ANSWER: D c




The front (anterior) surface of the heart lies behind the sternum and costal cartilages. It is formed by p
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ortions of the right atrium and the left and right ventricles. However, because the heart is tilted slightl
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y toward the left in the chest, the right ventricle is the area of the heart thatlies most directly behind the
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sternum.

OBJ: Identify the surfaces of the heart.
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4. Blood pressure is determined by
c multiplied by c c c c .
a. stroke volume; heart rate c c c




b. heart rate; cardiac output c c c




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




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




ANSWER: C c




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




, and from the heart via the . c c c c c c




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




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




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




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




ANSWER: D c




The right atrium receives blood low in oxygen from the superior vena cava, which carries blood fr
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om the head and upper extremities; the inferior vena cava, which carries blood fromthe lower bod
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y; and the coronary sinus, which is the largest vein that drains the heart.
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OBJ: Identify and describe the chambers of the heart and the vessels that enter or leave each.
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6. The heart is divided into
c c c c chambers but functions as a c c c c -sided pump. c




a. two; four c




b. three; two c




c. four; two c




d. four; three c




ANSWER: C c




The heart has four chambers: two atria and two ventricles. The right and left sides of the heartare sepa
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rated by an internal wall of connective tissue called a septum. The interatrial septum separates the ri
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ght and left atria. The interventricular septum separates the right and left ventricles. The septa separ
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ate the heart into two functional pumps. The right atrium and right ventricle make up one pump. The
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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 c c c c c .
a. increased heart rate c c




b. peripheral vasoconstriction c




c. constriction of bronchial smooth muscle c c c c




d. increased force of myocardial contraction c c c c




ANSWER: B c




Alpha1 receptors are found in the eyes, blood vessels, bladder, and male reproductive organs.Stim
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ulation of alpha1 receptor sites results in constriction.
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OBJ: Compare and contrast the effects of sympathetic and parasympathetic stimulation 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 c




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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side of the heart. This is called the pulmonary circulation. The right side of the heartis a low-
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pressure system. c