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 nn nn nn

,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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MULTIPLE CHOICE nn




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 nn nn nn nn



d.
left atrium and left ventricle
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ANSWER: A n n




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
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a.
pulmonary veins nn



b.
aorta
c.
pulmonary arteries nn



d.
inferior vena cava nn nn




ANSWER: A n n




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: 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 nn



b.
right atrium nn



c.
left ventricle nn



d.
right ventricle nn




ANSWER: D n n




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
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a.
stroke volume; heart rate nn nn nn



b.
heart rate; cardiac output nn nn nn



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



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




ANSWER: C n n




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
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the remainder of the body via the
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a.
coronary sinus; superior vena cava; inferior vena cava nn nn nn nn nn nn nn



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



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



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




ANSWER: D n n




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: n n 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 nn



b.
three; two nn



c.
four; two nn



d.
four; three nn




ANSWER: C n n




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 nn nn nn nn nn .
a.
increased heart rate nn nn



b.
peripheral vasoconstriction nn



c.
constriction of bronchial smooth muscle nn nn nn nn



d.
increased force of myocardial contraction nn nn nn nn




ANSWER: B n n




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 n n




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 heart is a
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low-pressure system.
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