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
Test bank for ECGs Made Easy
7th Edition by Barbara J Aehlert
Chapters 1 - 10
Test bank for ECGs Made Easy
7th Edition by Barba...
Chapter 9. Introduction to the 12-Lead ECG
IIll IIll IIll IIll IIll IIll
Chapter 10. Post-Test
IIll IIll
,Chapter 01: Anatomy and Physiology
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Aehlert: ECGs Made Easy, 7th Edition
IIll Il IIll IIll Il Il
MULTIPLECHOICE Il
1. The apex of the heart is formed by the
IIll IIll IIll IIll IIll IIll IIll Il .
a. tip of the left ventricle IIll IIll IIll IIll
b. tip of the right atrium IIll IIll IIll IIll
c. right atrium and right ventricle IIll IIll IIll IIll
d. left atrium and left ventricle IIll IIll IIll IIll
ANSWER: A IIll
The heart’s apex, or lower portion, is formed by the tip of the left ventricle. The apex lies
IIll IIll IIll IIll IIll IIll IIll IIll Il IIll IIll IIll IIll IIll IIll IIll IIll
justabove the diaphragm, between the fifth and sixth ribs, in the midclavicular line.
IIll Il IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
OBJ: Identify the surfaces of the heart.
IIll Il IIll IIll IIll IIll
2. The left atrium receives blood from the
IIll IIll IIll IIll IIll IIll .
a. pulmonary veins Il
b. aorta
c. pulmonary arteries Il
d. inferior vena cava IIll IIll
ANSWER: A IIll
The left atrium receives freshly oxygenated blood from the lungs via the right and
IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
leftpulmonary veins.
IIll Il IIll
OBJ: Identify and describe the chambers of the heart and the vessels that enter or leave each.
IIll Il IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
3. The anterior surface of the heart consists primarily of the
IIll IIll IIll IIll IIll IIll IIll IIll IIll .
a. left atrium IIll
b. right atrium IIll
c. left ventricle IIll
d. right ventricle IIll
ANSWER: D IIll
The front (anterior) surface of the heart lies behind the sternum and costal cartilages. It is
IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
formed by portions of the right atrium and the left and right ventricles. However, because
IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
the heart is tilted slightly toward the left in the chest, the right ventricle is the area of the
IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
heart thatlies most directly behind the sternum.
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OBJ: Identify the surfaces of the heart.
IIll Il IIll IIll IIll IIll
4. Blood pressure is determined by multiplied by
IIll IIll IIll IIll IIll .
a. stroke volume; heart rate IIll IIll IIll
b. heart rate; cardiac output IIll IIll IIll
c. cardiac output; peripheral vascular resistance IIll IIll IIll IIll
d. stroke volume; peripheral vascular resistance IIll IIll IIll IIll
ANSWER: C IIll
Blood pressure is equal to cardiac output multiplied by peripheral vascular resistance.
IIll IIll IIll IIll IIll IIll IIll IIll Il IIll IIll
, OBJ: Identify and explain the components of blood pressure and cardiac output.
IIll Il IIll IIll IIll IIll IIll IIll IIll IIll IIll
5. The right atrium receives venous blood from the head, neck, and thorax via the
IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll ,
fromthe remainder of the body via the , and from the heart via the
Il Il IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll .
a. coronary sinus; superior vena cava; inferior vena cava Il IIll IIll IIll IIll IIll IIll
b. superior vena cava; coronary sinus; inferior vena cava IIll IIll IIll Il IIll IIll IIll
c. inferior vena cava; superior vena cava; coronary sinus IIll IIll IIll IIll IIll IIll Il
d. superior vena cava; inferior vena cava; coronary sinus IIll IIll IIll IIll IIll IIll IIll
ANSWER: D IIll
The right atrium receives blood low in oxygen from the superior vena cava, which
IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
carries blood from the head and upper extremities; the inferior vena cava, which carries
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blood fromthe lower body; and the coronary sinus, which is the largest vein that drains
IIll IIll Il IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
the heart.
IIll IIll
OBJ: I I l l Identify and describe the chambers of the heart and the vessels that enter or leave each.
Il IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
6. The heart is divided into
IIll IIll IIll IIll chambers but functions as a IIll IIll IIll IIll -sided pump. IIll
a. two; four IIll
b. three; two IIll
c. four; two IIll
d. four; three IIll
ANSWER: C IIll
The heart has four chambers: two atria and two ventricles. The right and left sides of the
IIll IIll IIll IIll IIll IIll IIll IIll IIll Il IIll IIll IIll IIll IIll IIll
heartare separated by an internal wall of connective tissue called a septum. The
IIll Il IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
interatrial septum separates the right and left atria. The interventricular septum
IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
separates the right and left ventricles. The septa separate the heart into two functional
IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
pumps. The right atrium and right ventricle make up one pump. The left atrium and left
IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
ventricle make up the other.
IIll IIll IIll IIll IIll
OBJ: Identify and describe the chambers of the heart and the vessels that enter or leave each.
IIll Il IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
7. Stimulation of alpha1 receptors results in IIll IIll IIll IIll IIll .
a. increased heart rate IIll IIll
b. peripheral vasoconstriction IIll
c. constriction of bronchial smooth muscle IIll IIll IIll IIll
d. increased force of myocardial contraction IIll IIll IIll IIll
ANSWER: B IIll
Alpha1 receptors are found in the eyes, blood vessels, bladder, and male reproductive
IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
organs.Stimulation of alpha1 receptor sites results in constriction.
IIll Il IIll IIll IIll IIll IIll IIll IIll
OBJ: Compare and contrast the effects of sympathetic and parasympathetic stimulation of the heart.
IIll Il IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
8. Which side of the heart is a low-pressure system that pumps venous blood to the lungs?
IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
a. Left
b. Right
ANSWER: B IIll
The job of the right side of the heart is to pump unoxygenated blood to and through the
IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
lungs to the left side of the heart. This is called the pulmonary circulation. The right side of
IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll IIll
the heartis a low-pressure system.
IIll IIll Il IIll IIll IIll
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