ECGs Made Easy | 6th Edition | Barbara Aehlert | Full Test Bank with Answers

TESTBANK s




ECGs MADE EASY
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6TH EDITION | AEHLERT
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TEST BANK s s

,ECGs Made Easy 6th 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, 6th Edition
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MULTIPLE CHOICE ss




1. The apex of the heart is formed by the
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a. tip of the left ventricle
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b. tip of the right atrium
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c. right atrium and right ventricle
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d. left atrium and left ventricle
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ANS: A ss


The heart’s apex, or lower portion, is formed by the tip of the left ventricle. The apex lies
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just above the diaphragm, between the fifth and sixth ribs, in the midclavicular line.
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OBJ: s s Identify the surfaces of the heart. ss ss ss ss ss




2. The left atrium receives blood from the
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a. pulmonary veins ss


b. aorta
c. pulmonary arteries ss


d. inferior vena cava ss ss




ANS: A ss


The left atrium receives freshly oxygenated blood from the lungs via the right and left
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pulmonary veins.
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OBJ: s s Identify and 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
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a. left atrium ss


b. right atrium ss


c. left ventricle ss


d. right ventricle ss




ANS: D ss


The front (anterior) surface of the heart lies behind the sternum and costal cartilages. It is
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formed by portions of the right atrium and the left and right ventricles. However, because
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the heart is tilted slightly toward the left in the chest, the right ventricle is the area of the
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heart that lies most directly behind the sternum.
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OBJ: s s Identify the surfaces of the heart. ss ss ss ss ss




4. Blood pressure is determined by
ss multiplied by ss ss ss ss .
a. stroke volume; heart rate ss ss ss


b. heart rate; cardiac output ss ss ss


c. cardiac output; peripheral vascular resistance
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d. stroke volume; peripheral vascular resistance
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ANS: C ss


Blood pressure is equal to cardiac output multiplied by peripheral vascular resistance.
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, OBJ: s s Identify and 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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ss


the remainder of the body via the
ss ss , and from the heart via the ss ss ss ss ss ss ss ss ss ss ss .
a. coronary sinus; superior vena cava; inferior vena cava
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b. superior vena cava; coronary sinus; inferior vena cava
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c. inferior vena cava; superior vena cava; coronary sinus
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d. superior vena cava; inferior vena cava; coronary sinus
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ANS: D ss


The right atrium receives blood low in oxygen from the superior vena cava, which carries
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blood from the head and upper extremities; the inferior vena cava, which carries blood
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from the lower body; and the coronary sinus, which is the largest vein that drains the
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heart.
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OBJ: s s 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
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a. two; four ss


b. three; two ss


c. four; two ss


d. four; three ss




ANS: C ss


The heart has four chambers: two atria and two ventricles. The right and left sides of the
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heart are separated by an internal wall of connective tissue called a septum. The interatrial
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septum separates the right and left atria. The interventricular septum separates the right
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and left ventricles. The septa separate the heart into two functional pumps. The right
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atrium and right ventricle make up one pump. The left atrium and left ventricle make up
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the other.
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OBJ: s s Identify and 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 ss ss ss ss ss .
a. increased heart rate ss ss


b. peripheral vasoconstriction ss


c. constriction of bronchial smooth muscle ss ss ss ss


d. increased force of myocardial contraction ss ss ss ss




ANS: B ss


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: s s 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
ANS: B ss


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