TEST BANK ecgs made easy 6th edition by barbara aehlert hapter 1 - 10

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




1. The apex of the heart is formed by the
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a. tip of the left ventricle b b b b




b. tip of the right atrium b b b b




c. right atrium and right ventricle b b b b




d. left atrium and left ventricle b b b b




ANSWER: A b




The heart’s apex, or lower portion, is formed by the tip of the left ventricle. The apex lies just
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above the 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
b b b b b b .
a. pulmonary veins b




b. aorta
c. pulmonary arteries b




d. inferior vena cava b b




ANSWER: A b




The left atrium receives freshly oxygenated blood from the lungs via the right and left
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pulmonary veins.
b b




OBJ: 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 b




b. right atrium b




c. left ventricle b




d. right ventricle b




ANSWER: D b




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 the
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heart is tilted slightly toward the left in the chest, the right ventricle is the area of the heart that
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lies most directly behind the sternum.
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OBJ: Identify the surfaces of the heart.
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4. Blood pressure is determined by
b multiplied by b b b b .
a. stroke volume; heart rate b b b




b. heart rate; cardiac output b b b




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




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




ANSWER: C b




Blood pressure is equal to cardiac output multiplied by peripheral vascular resistance.
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, OBJ: 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
b b b b b b b b b b b b b , from
b




the remainder of the body via the
b b , and from the heart via the b b b b b b b b b b b .
a. coronary sinus; superior vena cava; inferior vena cava b b b b b b b




b. superior vena cava; coronary sinus; inferior vena cava b b b b b b b




c. inferior vena cava; superior vena cava; coronary sinus b b b b b b b




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




ANSWER: D b




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 from
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the lower body; 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
b b b b chambers but functions as a b b b b -sided pump. b




a. two; four b




b. three; two b




c. four; two b




d. four; three b




ANSWER: C b




The heart has four chambers: two atria and two ventricles. The right and left sides of the heart
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are 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: 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 b b b b b .
a. increased heart rate b b




b. peripheral vasoconstriction b




c. constriction of bronchial smooth muscle b b b b




d. increased force of myocardial contraction b b b b




ANSWER: B b




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: 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 b




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
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low-pressure system.
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