Test bank for ECGs Made Easyn 6th Edition by Barbara J Aehlert All Chapters ||Complete A+ Guide

TESTBANK w




ECGs MADE EASY
w w




6TH EDITION | AEHLERT
w w w




TEST BANK w

,ECGs Made Easy 6th Edition by Barbara Aehlert Test Bank
w w w w w w w w w




Table of Contents:
w w




Chapter 1. Anatomy & Physiology
w w w w




Chapter 2. Basic Electrophysiology
w w w




Chapter 3. Sinus Mechanisms
w w w




Chapter 4. Atrial Rhythms
w w w




Chapter 5. Junctional Rhythms
w w w




Chapter 6. Ventricular Rhythms
w w w




Chapter 7. Atrioventricular Blocks
w w w




Chapter 8. Pacemaker Rhythms
w w w




Chapter 9. Introduction to the 12-Lead ECG
w w w w w w




Chapter 10. Post-Test
w w

,Chapter 01: Anatomy and Physiology
w w w w


Aehlert: ECGs Made Easy, 6th Edition
w w w w w w




MULTIPLE CHOICE w




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


b. tip of the right atrium
w w w w


c. right atrium and right ventricle
w w w w


d. left atrium and left ventricle
w w w w




ANS: A w


The heart’s apex, or lower portion, is formed by the tip of the left ventricle. The apex lies
w w w w w w w w w w w w w w w w w


just above the diaphragm, between the fifth and sixth ribs, in the midclavicular line.
w w w w w w w w w w w w w w




OBJ: Identify the surfaces of the heart.
w w w w w w




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


b. aorta
c. pulmonary arteries w


d. inferior vena cava w w




ANS: A w


The left atrium receives freshly oxygenated blood from the lungs via the right and left
w w w w w w w w w w w w w w


pulmonary veins.
w w




OBJ: Identify and describe the chambers of the heart and the vessels that enter or leave each.
w w w w w w w w w w w w w w w w




3. The anterior surface of the heart consists primarily of the
w w w w w w w w w .
a. left atrium w


b. right atrium w


c. left ventricle
w


d. right ventricle w




ANS: D w


The front (anterior) surface of the heart lies behind the sternum and costal cartilages. It is
w w w w w w w w w w w w w w w


formed by portions of the right atrium and the left and right ventricles. However, because
w w w w w w w w w w w w w w w


the heart is tilted slightly toward the left in the chest, the right ventricle is the area of the
w w w w w w w w w w w w w w w w w w w


heart that lies most directly behind the sternum.
w w w w w w w w




OBJ: Identify the surfaces of the heart.
w w w w w w




4. Blood pressure is determined by
w multiplied by w w w w .
a. stroke volume; heart ratew w w


b. heart rate; cardiac output
w w w


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


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




ANS: C w


Blood pressure is equal to cardiac output multiplied by peripheral vascular resistance.
w w w w w w w w w w w

, OBJ: Identify and explain the components of blood pressure and cardiac output.
w w w w w w w w w w w




5. The right atrium receives venous blood from the head, neck, and thorax via the
w w w w w w w w w w w w w , from
w


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


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


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


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




ANS: D w


The right atrium receives blood low in oxygen from the superior vena cava, which carries
w w w w w w w w w w w w w w


blood from the head and upper extremities; the inferior vena cava, which carries blood
w w w w w w w w w w w w w w


from the lower body; and the coronary sinus, which is the largest vein that drains the
w w w w w w w w w w w w w w w w


heart.
w




OBJ: Identify and describe the chambers of the heart and the vessels that enter or leave each.
w w w w w w w w w w w w w w w w




6. The heart is divided into
w w w w chambers but functions as a w w w w -sided pump. w


a. two; four w


b. three; two w


c. four; two w


d. four; three w




ANS: C w


The heart has four chambers: two atria and two ventricles. The right and left sides of the
w w w w w w w w w w w w w w w w


heart are separated by an internal wall of connective tissue called a septum. The interatrial
w w w w w w w w w w w w w w w


septum separates the right and left atria. The interventricular septum separates the right and
w w w w w w w w w w w w w w


left ventricles. The septa separate the heart into two functional pumps. The right atrium
w w w w w w w w w w w w w w


and right ventricle make up one pump. The left atrium and left ventricle make up the
w w w w w w w w w w w w w w w w


other.
w




OBJ: Identify and describe the chambers of the heart and the vessels that enter or leave each.
w w w w w w w w w w w w w w w w




7. Stimulation of alpha1 receptors results in
w w w w w .
a. increased heart rate w w


b. peripheral vasoconstriction w


c. constriction of bronchial smooth muscle w w w w


d. increased force of myocardial contraction w w w w




ANS: B w


Alpha1 receptors are found in the eyes, blood vessels, bladder, and male reproductive organs.
w w w w w w w w w w w w w


Stimulation of alpha1 receptor sites results in constriction.
w w w w w w w w




OBJ: Compare and contrast the effects of sympathetic and parasympathetic stimulation of the heart.
w w w w w w w w w w w w w




8. Which side of the heart is a low-pressure system that pumps venous blood to the lungs?
w w w w w w w w w w w w w w w


a. Left
b. Right
ANS: B w


The job of the right side of the heart is to pump unoxygenated blood to and through the
w w w w w w w w w w w w w w w w w


lungs to the left side of the heart. This is called the pulmonary circulation. The right side of
w w w w w w w w w w w w w w w w w w


the heart is a low-pressure system.
w w w w w w