TEST BANK For ECGs Made Easy, 7th Edition by Barbara J Aehlert, All Chapters 1 - 10, Complete Newest Version

,TESTBANKFORECGSMADEEASY 7TH
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EDITION BY BARBARA ALL
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CHAPTERS
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,Chapter 01: Anatomy and Physiology
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Test Bank
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TRUE/FALSE

1. Stimulation of beta-adrenergic receptor sites will result in peripheral vasoconstriction.
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ANS: s a F
Beta receptor sites are divided into beta1 and beta2. Beta1 receptors are found
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in the heart and kidneys. Stimulation of beta1
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results in increased heart rate, contractility, and ultimately irritability of cardiac
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cells. Stimulation of beta1 receptor sites in the kidneys results in the release
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of renin into the blood. Renin promotes the production of angiotensin, a
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powerful vasoconstrictor. Beta2 receptor sites are found in the arterioles of
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the heart, lungs, and skeletal muscle. Stimulation results in dilation.
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Stimulation of beta2 receptor sites in the smooth muscle of the bronchi results in
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dilation.
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OBJ: Compare and contrast the effects of sympathetic and parasympathetic stimulation of the
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heart.
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2. Blood pressure is the result of cardiac output and peripheral vascular resistance.
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ANS: s a T
Blood pressure is equal to cardiac output multiplied by peripheral vascular resistance.
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Blood pressure is the force exerted by the circulating blood volume on the
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walls of the arteries.
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Peripheral vascular resistance is the resistance to the flow of blood determined by blood
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vessel diameter and the tone of the vascular musculature.
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OBJ: Identify and explain the components of blood pressure and cardiac output.
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MULTIPLE CHOICE sa




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



b. tip of the right atrium s a sa s a s a



c. right atrium and right ventricle s a s a s a s a



d. left atrium and left ventricle s a s a s a s a




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




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



b. aorta
c. pulmonary arteries s a



d. inferior vena cava sa s a




ANS: s a A


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The left atrium receives freshly oxygenated blood from the lungs via the right and
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left pulmonary veins.
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OBJ: s a s a Identify and describe the chambers of the heart and the vessels that enter or leave
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each.
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3. The anterior surface of the heart consists primarily of the
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a. left atrium sa



b. right atrium sa



c. left ventricle s a



d. right ventricle sa




ANS: s a D
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,
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because the heart is tilted slightly toward the left in the chest, the right ventricle is the
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area of the heart that lies most directly behind the sternum.
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OBJ: s a s a Identify the surfaces of the heart. s a s a s a s a s a




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



b. heart rate; cardiac output s a s a s a



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



d. stroke volume; peripheral vascular resistance s a s a s a s a




ANS: s a C
Blood pressure is equal to cardiac output multiplied by peripheral vascular resistance.
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OBJ: s a s a 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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s , from the remainder of the body via the
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heart via the
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a. coronary sinus; superior vena cava; inferior vena cava sa s a s a s a s a s a s a



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



c. inferior vena cava; superior vena cava; coronary sinus s a s a s a s a s a s a s a



d. superior vena cava; inferior vena cava; coronary sinus s a s a s a s a s a s a sa




ANS: s a D
The right atrium receives blood low in oxygen from the superior vena cava,
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which carries blood from the head and upper extremities; the inferior vena
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cava, which carries blood from the lower body; and the coronary sinus, which
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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
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each.
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6. The heart is divided into
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a. two; four s a



b. three; two sa



c. four; two s a



d. four; three sa




ANS: s a C




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