Power Point Clicker Questions prepared by Mark Hollier
Power. Point® Clicker Questions prepared by Mark Hollier, Georgia Perimeter College Clarkston Campus CHAPTER © Annie Leibovitz/Contact Press Images 18 © 2013 Pearson Education, Inc.
The apex of the heart points _______. superiorly toward the right shoulder b) laterally toward the right hip c) inferiorly toward the left hip d) posteriorly toward the left shoulder a) © 2013 Pearson Education, Inc.
The apex of the heart points _______. superiorly toward the right shoulder b) laterally toward the right hip c) inferiorly toward the left hip d) posteriorly toward the left shoulder a) © 2013 Pearson Education, Inc.
What is the double-walled sac covering the heart termed? Pericardium b) Myocardium c) Epicardium d) Endocardium a) © 2013 Pearson Education, Inc.
What is the double-walled sac covering the heart termed? Pericardium b) Myocardium c) Epicardium d) Endocardium a) © 2013 Pearson Education, Inc.
Of the following layers of the heart wall, which consumes the most energy? Epicardium b) Myocardium c) Endocardium d) Visceral pericardium a) © 2013 Pearson Education, Inc.
Of the following layers of the heart wall, which consumes the most energy? Epicardium b) Myocardium c) Endocardium d) Visceral pericardium a) © 2013 Pearson Education, Inc.
Which of the following structures is an exception to the general principle surrounding blood vessel oxygenation levels? Pulmonary artery b) Aorta c) Pulmonary veins d) Both a and c a) © 2013 Pearson Education, Inc.
Which of the following structures is an exception to the general principle surrounding blood vessel oxygenation levels? Pulmonary artery b) Aorta c) Pulmonary veins d) Both a and c a) © 2013 Pearson Education, Inc.
Which of the following statements is true? All arteries transport oxygen-rich blood. b) The right side of the heart is the systemic circuit pump. c) Equal volumes of blood are pumped to the pulmonary and systemic circuits at any moment. d) The left side of the heart pumps blood to the lungs. a) © 2013 Pearson Education, Inc.
Which of the following statements is true? All arteries transport oxygen-rich blood. b) The right side of the heart is the systemic circuit pump. c) Equal volumes of blood are pumped to the pulmonary and systemic circuits at any moment. d) The left side of the heart pumps blood to the lungs. a) © 2013 Pearson Education, Inc.
What purpose does the coronary circuit serve? None; it is a vestigial set of vessels. b) It delivers 1/20 of the body's blood supply to the heart muscle itself. c) It delivers blood to the anterior lung surface for gas exchange. d) It feeds the anterior thoracic wall. a) © 2013 Pearson Education, Inc.
What purpose does the coronary circuit serve? None; it is a vestigial set of vessels. b) It delivers 1/20 of the body's blood supply to the heart muscle itself. c) It delivers blood to the anterior lung surface for gas exchange. d) It feeds the anterior thoracic wall. a) © 2013 Pearson Education, Inc.
A heart murmur would be detected when blood is heard flowing from the ____ to the ____ through the ____. right atrium; right ventricle; tricuspid valve b) right atrium; left atrium; tricuspid valve c) left ventricle; left atrium; mitral valve d) left atrium; left ventricle; mitral valve a) © 2013 Pearson Education, Inc.
A heart murmur would be detected when blood is heard flowing from the ____ to the ____ through the ____. right atrium; right ventricle; tricuspid valve b) right atrium; left atrium; tricuspid valve c) left ventricle; left atrium; mitral valve d) left atrium; left ventricle; mitral valve a) © 2013 Pearson Education, Inc.
The presence of intercalated discs between adjacent cardiac muscle cells causes the heart to behave as a _______. single chamber b) contractile myofibril c) desmosome d) functional syncytium a) © 2013 Pearson Education, Inc.
The presence of intercalated discs between adjacent cardiac muscle cells causes the heart to behave as a _______. single chamber b) contractile myofibril c) desmosome d) functional syncytium a) © 2013 Pearson Education, Inc.
Cardiac muscle cells have several similarities with skeletal muscle cells. Which of the following is not a similarity? The cells are each innervated by a nerve ending. b) The cells store calcium ions in the sarcoplasmic reticulum. c) The cells contain sarcomeres. d) The cells become depolarized when sodium ions enter the cytoplasm. a) © 2013 Pearson Education, Inc.
Cardiac muscle cells have several similarities with skeletal muscle cells. Which of the following is not a similarity? The cells are each innervated by a nerve ending. b) The cells store calcium ions in the sarcoplasmic reticulum. c) The cells contain sarcomeres. d) The cells become depolarized when sodium ions enter the cytoplasm. a) © 2013 Pearson Education, Inc.
The stimulus for the heart's rhythmic contractions comes from _____. intercalated discs b) acetylcholine c) a neuromuscular junction d) a pacemaker potential a) © 2013 Pearson Education, Inc.
The stimulus for the heart's rhythmic contractions comes from _____. intercalated discs b) acetylcholine c) a neuromuscular junction d) a pacemaker potential a) © 2013 Pearson Education, Inc.
In a normal heart, which of the following structures is responsible for setting the heart's pace? Sinoatrial node b) Atrioventricular node c) Atrioventricular bundle d) Subendocardial conducting network a) © 2013 Pearson Education, Inc.
In a normal heart, which of the following structures is responsible for setting the heart's pace? Sinoatrial node b) Atrioventricular node c) Atrioventricular bundle d) Subendocardial conducting network a) © 2013 Pearson Education, Inc.
Predict the nature of an ECG recording when the atrioventricular node becomes the pacemaker. There would continue to be a normal sinus rhythm. b) The P wave would be much larger than normal. c) The rhythm would be slower. d) The T wave would be much smaller than normal. a) © 2013 Pearson Education, Inc.
Predict the nature of an ECG recording when the atrioventricular node becomes the pacemaker. There would continue to be a normal sinus rhythm. b) The P wave would be much larger than normal. c) The rhythm would be slower. d) The T wave would be much smaller than normal. a) © 2013 Pearson Education, Inc.
The input to the heart from the cardioinhibitory center primarily affects the ______. sinoatrial node and atrioventricular node b) subendocardial conducting network c) the cardiac contractile fibers d) atrioventricular bundle a) © 2013 Pearson Education, Inc.
The input to the heart from the cardioinhibitory center primarily affects the ______. sinoatrial node and atrioventricular node b) subendocardial conducting network c) the cardiac contractile fibers d) atrioventricular bundle a) © 2013 Pearson Education, Inc.
The "lub-dup" heart sounds are produced by _______. the walls of the atria and ventricles slapping together during a contraction b) the blood hitting the walls of the ventricles and arteries, respectively c) the closing of the atrioventricular valves ("lub") and the closing of the semilunar valves ("dup") d) the closing of the semilunar valves ("lub") and the closing of the atrioventricular valves ("dup") a) © 2013 Pearson Education, Inc.
The "lub-dup" heart sounds are produced by _______. the walls of the atria and ventricles slapping together during a contraction b) the blood hitting the walls of the ventricles and arteries, respectively c) the closing of the atrioventricular valves ("lub") and the closing of the semilunar valves ("dup") d) the closing of the semilunar valves ("lub") and the closing of the atrioventricular valves ("dup") a) © 2013 Pearson Education, Inc.
Atrial systole occurs _______ the firing of the sinoatrial node. before b) after c) simultaneously with d) alternately with a) © 2013 Pearson Education, Inc.
Atrial systole occurs _______ the firing of the sinoatrial node. before b) after c) simultaneously with d) alternately with a) © 2013 Pearson Education, Inc.
The majority (80%) of ventricular filling occurs ____. during late ventricular diastole b) passively through blood flow alone c) with atrial systole d) both a and b a) © 2013 Pearson Education, Inc.
The majority (80%) of ventricular filling occurs ____. during late ventricular diastole b) passively through blood flow alone c) with atrial systole d) both a and b a) © 2013 Pearson Education, Inc.
In terms of blood flow, why is it important that atrial diastole occurs just as ventricular systole begins? The AV valves would remain open if the atria were still contracting. b) The atria need that time to fill with blood in preparation for ventricular filling. c) Ventricular systole pulls the remaining 20% of blood volume from the atria. d) Blood would flow too fast otherwise. a) © 2013 Pearson Education, Inc.
In terms of blood flow, why is it important that atrial diastole occurs just as ventricular systole begins? The AV valves would remain open if the atria were still contracting. b) The atria need that time to fill with blood in preparation for ventricular filling. c) Ventricular systole pulls the remaining 20% of blood volume from the atria. d) Blood would flow too fast otherwise. a) © 2013 Pearson Education, Inc.
Cardiac output is determined by _______. heart rate b) stroke volume c) cardiac reserve d) both a and b a) © 2013 Pearson Education, Inc.
Cardiac output is determined by _______. heart rate b) stroke volume c) cardiac reserve d) both a and b a) © 2013 Pearson Education, Inc.
Your heart seems to "pound" after you hear a sudden, loud noise. This increased contractility is _______. because vagal nerve impulses arrive faster at the heart b) because when a gasp of surprise is emitted, the Frank-Starling law of the heart is evident c) due to norepinephrine causing threshold to be reached more quickly d) because acetylcholine release is inhibited a) © 2013 Pearson Education, Inc.
Your heart seems to "pound" after you hear a sudden, loud noise. This increased contractility is _______. because vagal nerve impulses arrive faster at the heart b) because when a gasp of surprise is emitted, the Frank-Starling law of the heart is evident c) due to norepinephrine causing threshold to be reached more quickly d) because acetylcholine release is inhibited a) © 2013 Pearson Education, Inc.
Why is high blood pressure damaging to the heart? With high blood pressure, the blood is more viscous and harder to pump. b) The heart rate slows down to dangerously low levels if blood pressure is too high. c) Due to increased afterload, the left ventricle must contract more forcefully to expel the same amount of blood. d) Sodium concentration increases during high blood pressure and is toxic to the myocardium. a) © 2013 Pearson Education, Inc.
Why is high blood pressure damaging to the heart? With high blood pressure, the blood is more viscous and harder to pump. b) The heart rate slows down to dangerously low levels if blood pressure is too high. c) Due to increased afterload, the left ventricle must contract more forcefully to expel the same amount of blood. d) Sodium concentration increases during high blood pressure and is toxic to the myocardium. a) © 2013 Pearson Education, Inc.
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