Electrocardiography for healthcare professionals 3rd edition booth test bank

Chapter 02 The Cardiovascular System Multiple Choice Questions The time from the beginning of atrial depolarization to the beginning of ventricular depolarization is shown on the ECG waveform as the: A QRS complex B PR interval C QT interval D ST segment What is recorded on the ECG strip? A The electrical activity of the heart B The muscle contractions of the heart C The circulation of blood in the heart D All of the above The average heart is approximately what size? A The size of a baseball B The size of your fist C The size of a peach D The size of your foot The outermost layer of the heart is the: A Endocardium B Myocardium C Epicardium D Pericardium The middle layer of the heart is the: A Endocardium B Myocardium C Epicardium D Pericardium 2- Chapter 02 The Cardiovascular System The innermost layer of the heart is the: A Endocardium B Myocardium C Epicardium D Pericardium The sac of tissue that encloses the entire heart is the: A Atrium B Ventricle C Myocardium D Pericardium The purpose of the pericardium is to: A Protect the heart from infection and trauma B Contract the heart C Circulate blood through the coronary arteries D Keep blood flow headed in the right direction The heart is divided into four chambers The top chambers are: A Right atrium, right ventricle B Left atrium, left ventricle C Right atrium, left atrium D Right ventricle, left ventricle 10 The heart is divided into four chambers The bottom chambers are: A Right atrium, right ventricle B Left atrium, left ventricle C Right atrium, left atrium D Right ventricle, left ventricle 2- Chapter 02 The Cardiovascular System 11 The valve located between the right atrium and right ventricle is the: A Mitral (bicuspid) valve B Tricuspid valve C Aortic valve D Pulmonary valve 12 The valve located between the left atrium and left ventricle is the: A Mitral (bicuspid) valve B Tricuspid valve C Aortic valve D Pulmonary valve 13 The tricuspid and mitral (bicuspid) valves are known as _ because they separate the atria from the ventricles A Semilunar valves B Pulmonary valves C Atrioventricular (AV) valves D Aortic valves 14 The _ valves separate the ventricles from the arteries leading to the lungs or body A Tricuspid B Semilunar C Mitral (bicuspid) D Atrioventricular (AV) 15 Name the two semilunar valves A Pulmonary, mitral B Aortic, tricuspid C Tricuspid, mitral D Aortic, pulmonary 2- Chapter 02 The Cardiovascular System 16 Blood returns to the heart via the veins The largest vein is the: A Vena cava B Cava vena C Jugular D Subclavian 17 Oxygenated blood travels through the heart via the: A Pulmonary arteries B Peripheral venous system C Coronary arteries D All of the above 18 The valves located in the heart are important because they: A Act like a door B Prevent blood from flowing backwards C Form electrical conduction through the heart D Allow for good blood flow to the body 19 Blood that leaves the right ventricle is considered: A Deoxygenated B Systemic C Peripheral venous return D All of the above 20 What are the first vessels to branch off the aorta? A Coronary arteries B Capillaries C Venae cavae D Pulmonary arteries 2- Chapter 02 The Cardiovascular System 21 The volume of blood pumped each minute is referred to as: A Cardiac cycle B Cardiac output C Stroke volume D Systole 22 The volume of blood ejected with each contraction is referred to as: A Cardiac cycle B Cardiac output C Stroke volume D Systole 23 The "lubb" and "dupp" sounds you hear are made by the: A The opening and closing of the heart valves B The atria contracting C The ventricles contracting D Blood flow through the heart 24 The phase of the cardiac cycle when the heart is expanding and refilling, also known as the relaxation phase, is: A Systole B Diastole C Automaticity D Conductivity 25 The phase of the cardiac cycle when the heart is pumping blood out to the body, also known as the contraction phase, is: A Systole B Diastole C Automaticity D Conductivity 2- Chapter 02 The Cardiovascular System 26 Together, the contraction and relaxation of the heart make up: A Systole B Diastole C The cardiac cycle D Coronary circulation 27 The heart's own ability to initiate an electrical impulse without being stimulated by another source is known as: A Contractility B Excitability C Conductivity D Automaticity 28 The ability of the heart cells to receive and transmit an electrical impulse is known as: A Contractility B Excitability C Conductivity D Automaticity 29 The ability of the heart muscle cells to shorten in response to an electrical impulse is known as: A Contractility B Excitability C Conductivity D Automaticity 30 The ability of the heart muscle cells to respond to an impulse or stimulus is known as: A Contractility B Excitability C Conductivity D Automaticity 2- Chapter 02 The Cardiovascular System 31 When the sympathetic branch of the ANS (automatic nervous system) is stimulated, the heart responds by: A Speeding up B Slowing down C Staying the same D Becoming depressed 32 What is the heart's response to stimulation of the vagus nerve? A Becomes depressed B Stays the same C Speeds up D Slows down 33 The function of the bundle branch system is to: A Delay the electrical impulse to allow for the atrial kick to occur B Conduct electrical impulses from the atria to the ventricles C Conduct electrical impulses from the AV node to the Purkinje fibers D Distribute the electrical impulse through the myocardium 34 The SA node sends electrical impulses at a rate of: A 72-100 bpm B 40-60 bpm C 20-40 bpm D 60-100 bpm 35 The normal pacemaker of the heart, where the electrical impulse for the heartbeat originates, is the: A SA node B AV node C Bundle branches D Ventricles 2- Chapter 02 The Cardiovascular System 36 The AV node has several important qualities that help the heart function effectively All of these are qualities of the AV node EXCEPT: A Causes the delay of electrical impulses, which limits the number of impulses traveling to the ventricles B Allows for a delay to provide time for the blood to travel from the atria to the ventricles before they contract (atrial kick) C Causes a loss of atrial kick D Serves as a backup pacemaker if the SA node fails 37 Depolarization of the cells causes the heart muscle to: A Relax B Refill the chambers of the heart C Conduct electrical impulses D Contract 38 The P wave represents: A Atrial contraction B Atrial relaxation C Ventricular contraction D Ventricular relaxation 39 The T wave represents: A Atrial contraction B Atrial relaxation C Ventricular contraction D Ventricular relaxation True / False Questions 40 The rate at which the AV node sends electrical impulses is 40-60 beats/minute True False 2- Chapter 02 The Cardiovascular System 41 Repolarization of the heart is also the relaxation phase of the contraction process, which allows the chambers of the heart to refill True False 42 The QRS complex represents the ventricular contraction of the heart True False 43 The U wave represents repolarization of the ventricles True False 44 The ST segment is the time between the end of ventricular depolarization and the beginning of ventricular repolarization and is often assessed to determine ischemia or infarction process in the heart True False 45 A normal PR interval is 0.06-0.10 seconds in length True False 46 A normal QRS complex is 0.12 to 0.20 seconds in length True False 47 The J point is important when measuring the QRS complex because it represents the end of ventricular depolarization True False 2- Chapter 02 The Cardiovascular System 48 The PR interval represents the time it takes the electrical current to travel from the SA node, through the AV node, to the ventricles prior to ventricular contraction True False 49 Blood travels from the body to the right side of the heart to the pulmonary circulation and then returns to the left side of the heart prior to being pumped to the coronary circulation and systemic circulation True False 50 Blood leaves the right ventricle and travels to the lungs via the pulmonary vein True False 51 Blood circulation depends on the heart's ability to contract True False 52 The process of transporting blood to and from the body tissues is known as conductivity True False 53 Blood supplies body tissues with carbon dioxide and removes oxygen and nutrients True False 54 The function of the heart is to pump blood to and from all the tissues of the body True False 55 In general, men have a faster heartbeat than women True False 2- Chapter 02 The Cardiovascular System Key 18 (p 4) The valves located in the heart are important because they: A Act like a door B Prevent blood from flowing backwards C Form electrical conduction through the heart D Allow for good blood flow to the body The flaps or cusps in the valves open to allow blood flow, then close to prevent the backflow of blood Bloom's: Remember Difficulty: Medium Learning Outcome: Recall the structures of the heart, including valves, chambers, and vessels 19 (p 6) Blood that leaves the right ventricle is considered: A Deoxygenated B Systemic C Peripheral venous return D All of the above When the heart contracts, the right ventricle pumps deoxygenated blood to the lungs via the pulmonary artery Bloom's: Remember Difficulty: Medium Learning Outcome: Recall the structures of the heart, including valves, chambers, and vessels 20 (p 7) What are the first vessels to branch off the aorta? A Coronary arteries B Capillaries C Venae cavae D Pulmonary arteries Oxygenated blood from the left ventricle travels through the aorta to the coronary arteries These arteries branch to supply oxygenated blood to the entire heart Bloom's: Remember Difficulty: Medium Learning Outcome: Differentiate between pulmonary, systemic, and coronary circulation 2- Chapter 02 The Cardiovascular System Key 21 (p 9) The volume of blood pumped each minute is referred to as: A Cardiac cycle B Cardiac output C Stroke volume D Systole The volume of blood pumped each minute is referred to as cardiac output Bloom's: Remember Difficulty: Medium Learning Outcome: Differentiate between pulmonary, systemic, and coronary circulation 22 (p 9) The volume of blood ejected with each contraction is referred to as: A Cardiac cycle B Cardiac output C Stroke volume D Systole The volume of blood ejected with each contraction is referred to as stroke volume Bloom's: Remember Difficulty: Medium Learning Outcome: Differentiate between pulmonary, systemic, and coronary circulation 23 (p 9) The "lubb" and "dupp" sounds you hear are made by the: A The opening and closing of the heart valves B The atria contracting C The ventricles contracting D Blood flow through the heart These sounds are made by the opening and closing of the heart valves Bloom's: Remember Difficulty: Medium Learning Outcome: Explain the cardiac cycle, and relate the difference between systole and diastole 2- Chapter 02 The Cardiovascular System Key 24 (p 9) The phase of the cardiac cycle when the heart is expanding and refilling, also known as the relaxation phase, is: A Systole B Diastole C Automaticity D Conductivity As the heart relaxes, it is expanding and refilling The relaxation phase of the heart is known as diastole Bloom's: Remember Difficulty: Medium Learning Outcome: Explain the cardiac cycle, and relate the difference between systole and diastole 25 (p 9) The phase of the cardiac cycle when the heart is pumping blood out to the body, also known as the contraction phase, is: A Systole B Diastole C Automaticity D Conductivity When the heart contracts, it is squeezing blood out to the body The contraction phase is known as systole Bloom's: Remember Difficulty: Medium Learning Outcome: Explain the cardiac cycle, and relate the difference between systole and diastole 26 (p 9) Together, the contraction and relaxation of the heart make up: A Systole B Diastole C The cardiac cycle D Coronary circulation Systole (contraction) and diastole (relaxation) of the heart make up the cardiac cycle Bloom's: Remember Difficulty: Medium Learning Outcome: Explain the cardiac cycle, and relate the difference between systole and diastole 2- Chapter 02 The Cardiovascular System Key 27 (p 10) The heart's own ability to initiate an electrical impulse without being stimulated by another source is known as: A Contractility B Excitability C Conductivity D Automaticity Automaticity is the ability of the heart to initiate an electrical impulse Bloom's: Remember Difficulty: Medium Learning Outcome: Recall the unique qualities of the heart and their relationship to the cardiac conduction system 28 (p 11) The ability of the heart cells to receive and transmit an electrical impulse is known as: A Contractility B Excitability C Conductivity D Automaticity Conductivity is the ability of the heart cells to receive and transmit an electrical impulse Bloom's: Remember Difficulty: Medium Learning Outcome: Recall the unique qualities of the heart and their relationship to the cardiac conduction system 29 (p 11) The ability of the heart muscle cells to shorten in response to an electrical impulse is known as: A Contractility B Excitability C Conductivity D Automaticity Contractility is the ability of the heart muscle cells to shorten in response to an electrical stimulus Bloom's: Remember Difficulty: Medium Learning Outcome: Recall the unique qualities of the heart and their relationship to the cardiac conduction system 2- Chapter 02 The Cardiovascular System Key 30 (p 11) The ability of the heart muscle cells to respond to an impulse or stimulus is known as: A Contractility B Excitability C Conductivity D Automaticity Excitability is the ability of the heart muscle cells to respond to an impulse or stimulus Bloom's: Remember Difficulty: Medium Learning Outcome: Recall the unique qualities of the heart and their relationship to the cardiac conduction system 31 (p 11) When the sympathetic branch of the ANS (automatic nervous system) is stimulated, the heart responds by: A Speeding up B Slowing down C Staying the same D Becoming depressed When the sympathetic branch of the ANS is stimulated, it speeds up the heart Bloom's: Remember Difficulty: Hard Learning Outcome: Recall the unique qualities of the heart and their relationship to the cardiac conduction system 32 (p 11) What is the heart's response to stimulation of the vagus nerve? A Becomes depressed B Stays the same C Speeds up D Slows down Stimulation of the vagus nerve slows the heart Bloom's: Remember Difficulty: Hard Learning Outcome: Recall the unique qualities of the heart and their relationship to the cardiac conduction system 2- Chapter 02 The Cardiovascular System Key 33 (p 12) The function of the bundle branch system is to: A Delay the electrical impulse to allow for the atrial kick to occur B Conduct electrical impulses from the atria to the ventricles C Conduct electrical impulses from the AV node to the Purkinje fibers D Distribute the electrical impulse through the myocardium The bundle branches conduct electrical impulses from the AV node to the Purkinje fibers Bloom's: Remember Difficulty: Hard Learning Outcome: Describe the parts and function of the conduction system 34 (p 12) The SA node sends electrical impulses at a rate of: A 72-100 bpm B 40-60 bpm C 20-40 bpm D 60-100 bpm The SA node fires at about 60 to 100 times per minute Bloom's: Remember Difficulty: Medium Learning Outcome: Describe the parts and function of the conduction system 35 (p 12) The normal pacemaker of the heart, where the electrical impulse for the heartbeat originates, is the: A SA node B AV node C Bundle branches D Ventricles The sinoatrial (SA) node is the pacemaker of the heart and initiates the heartbeat Bloom's: Remember Difficulty: Easy Learning Outcome: Describe the parts and function of the conduction system 2- Chapter 02 The Cardiovascular System Key 36 (p 40) The AV node has several important qualities that help the heart function effectively All of these are qualities of the AV node EXCEPT: A Causes the delay of electrical impulses, which limits the number of impulses traveling to the ventricles B Allows for a delay to provide time for the blood to travel from the atria to the ventricles before they contract (atrial kick) C Causes a loss of atrial kick D Serves as a backup pacemaker if the SA node fails The AV node causes a delay in the electrical impulse, which provides time for additional blood to travel from the atria to the ventricles before they contract This additional blood is known as the atrial kick Bloom's: Remember Difficulty: Hard Learning Outcome: Describe the parts and function of the conduction system 37 (p 42) Depolarization of the cells causes the heart muscle to: A Relax B Refill the chambers of the heart C Conduct electrical impulses D Contract Depolarization is the most important electrical event in the heart—it causes the heart to contract and pump blood to the body Bloom's: Remember Difficulty: Medium Learning Outcome: Identify each part of the ECG waveform 2- Chapter 02 The Cardiovascular System Key 38 (p 43) The P wave represents: A Atrial contraction B Atrial relaxation C Ventricular contraction D Ventricular relaxation The P wave represents atrial depolarization with resulting atrial contraction Bloom's: Remember Difficulty: Medium Learning Outcome: Describe the heart activity that produces the ECG waveform 39 (p 43) The T wave represents: A Atrial contraction B Atrial relaxation C Ventricular contraction D Ventricular relaxation The T wave represents ventricular repolarization or relaxation Bloom's: Remember Difficulty: Medium Learning Outcome: Describe the heart activity that produces the ECG waveform True / False Questions 40 (p 40) The rate at which the AV node sends electrical impulses is 40-60 beats/minute TRUE The AV node fires at a rate of 40-60 bpm This is known as the inherent rate of the AV node Bloom's: Remember Difficulty: Medium Learning Outcome: Recall the unique qualities of the heart and their relationship to the cardiac conduction system 2- Chapter 02 The Cardiovascular System Key 41 (p 42) Repolarization of the heart is also the relaxation phase of the contraction process, which allows the chambers of the heart to refill TRUE Repolarization is when the heart muscle cells return to their resting electrical state and the heart muscle relaxes Bloom's: Understand Difficulty: Medium Learning Outcome: Identify each part of the ECG waveform 42 (p 43) The QRS complex represents the ventricular contraction of the heart TRUE The QRS complex represents ventricular depolarization and resulting ventricular contraction Bloom's: Understand Difficulty: Medium Learning Outcome: Describe the heart activity that produces the ECG waveform 43 (p 43) The U wave represents repolarization of the ventricles FALSE The U wave represents the repolarization of the bundle of His and Purkinje fibers Bloom's: Understand Difficulty: Medium Learning Outcome: Describe the heart activity that produces the ECG waveform 2- Chapter 02 The Cardiovascular System Key 44 (p 43) The ST segment is the time between the end of ventricular depolarization and the beginning of ventricular repolarization and is often assessed to determine ischemia or infarction process in the heart TRUE The ST segment is the time between ventricular depolarization and the beginning of ventricular repolarization and is used to determine ischemia Bloom's: Understand Difficulty: Hard Learning Outcome: Describe the heart activity that produces the ECG waveform 45 (p 44) A normal PR interval is 0.06-0.10 seconds in length FALSE A normal PR interval is 0.12 to 0.20 seconds in length Bloom's: Understand Difficulty: Medium Learning Outcome: Describe the heart activity that produces the ECG waveform 46 (p 45) A normal QRS complex is 0.12 to 0.20 seconds in length FALSE A normal QRS complex is 0.06 to 0.10 seconds in length Bloom's: Understand Difficulty: Medium Learning Outcome: Describe the heart activity that produces the ECG waveform 2- Chapter 02 The Cardiovascular System Key 47 (p 45) The J point is important when measuring the QRS complex because it represents the end of ventricular depolarization TRUE The J point is the junction of the QRS interval and the ST interval It represents the end of the QRS complex and ventricular depolarization Bloom's: Understand Difficulty: Medium Learning Outcome: Describe the heart activity that produces the ECG waveform 48 (p 44) The PR interval represents the time it takes the electrical current to travel from the SA node, through the AV node, to the ventricles prior to ventricular contraction TRUE The PR interval represents the time the electrical impulse is initiated until the ventricles are stimulated by the impulse to start the contraction Bloom's: Understand Difficulty: Medium Learning Outcome: Describe the heart activity that produces the ECG waveform 49 (p 33) Blood travels from the body to the right side of the heart to the pulmonary circulation and then returns to the left side of the heart prior to being pumped to the coronary circulation and systemic circulation TRUE The left side of the heart pumps oxygenated blood to the body systems The right side of the heart pumps deoxygenated blood to the lungs Bloom's: Remember Difficulty: Medium Learning Outcome: Differentiate between pulmonary, systemic, and coronary circulation 2- Chapter 02 The Cardiovascular System Key 50 (p 34) Blood leaves the right ventricle and travels to the lungs via the pulmonary vein FALSE Blood leaves the right ventricle and travels to the lungs via the pulmonary artery Bloom's: Remember Difficulty: Medium Learning Outcome: Differentiate between pulmonary, systemic, and coronary circulation 51 (p 29) Blood circulation depends on the heart's ability to contract TRUE Circulation of the blood is dependent upon the heart and its ability to contract or beat Bloom's: Understand Difficulty: Easy Learning Outcome: Describe circulation as it relates to the ECG 52 (p 29) The process of transporting blood to and from the body tissues is known as conductivity FALSE The process of transporting blood to and from the body tissues is known as circulation Bloom's: Remember Difficulty: Medium Learning Outcome: Describe circulation as it relates to the ECG 53 (p 29) Blood supplies body tissues with carbon dioxide and removes oxygen and nutrients FALSE Blood supplies body tissues with nutrients and oxygen and removes carbon dioxide and other wastes Bloom's: Remember Difficulty: Medium Learning Outcome: Describe circulation as it relates to the ECG 2- Chapter 02 The Cardiovascular System Key 54 (p 29) The function of the heart is to pump blood to and from all the tissues of the body TRUE The function of the heart is to pump blood to and from all the tissues of the body Bloom's: Remember Difficulty: Medium Learning Outcome: Describe circulation as it relates to the ECG 55 (p 37) In general, men have a faster heartbeat than women FALSE In general, women have a faster heartbeat than men Bloom's: Remember Difficulty: Easy Learning Outcome: Explain the cardiac cycle, and relate the difference between systole and diastole 56 (p 38) Contraction of the heart is controlled by electrical impulses TRUE Electrical impulses stimulate contraction of the heart, and the absence of electrical impulses allows the heart muscle to relax Bloom's: Understand Difficulty: Easy Learning Outcome: Explain the conduction system as it relates to the ECG 57 (p 38) Electrical impulses are normally initiated by the ventricles of the heart FALSE Electrical impulses are initiated by specialized pacemaker cells in the heart Bloom's: Remember Difficulty: Easy Learning Outcome: Describe the parts and function of the conduction system 2- Chapter 02 The Cardiovascular System Key 58 (p 38) Electrical impulses that are carried through the heart by the electrical conduction system form the basis for the ECG tracing TRUE Electrical impulses that are carried through the heart by the electrical conduction system form the basis for the ECG tracing Bloom's: Understand Difficulty: Easy Learning Outcome: Explain the conduction system as it relates to the ECG 59 (p 38) Cardiac contraction occurs when electrical impulses cause the working cells in the heart to shorten TRUE Cardiac contraction occurs when electrical impulses cause the working cells in the heart to shorten Bloom's: Understand Difficulty: Easy Learning Outcome: Explain the conduction system as it relates to the ECG 60 (p 43) The T wave represents atrial depolarization FALSE The T wave represents ventricular repolarization Bloom's: Understand Difficulty: Easy Learning Outcome: Explain the conduction system as it relates to the ECG 2- Chapter 02 The Cardiovascular System Key 61 (p 43) The period of time between ventricular depolarization and the beginning of ventricular repolarization is represented on the ECG waveform by the QT interval TRUE The period of time between ventricular depolarization and the beginning of ventricular repolarization is represented on the ECG waveform by the QT interval Bloom's: Understand Difficulty: Easy Learning Outcome: Explain the conduction system as it relates to the ECG Matching Questions 62 (p 30) Match the numbers from the figure to the correct structure located on the chest A Diaphragm B Apex of heart C Intercostal space D Sternum E Base of heart F Midclavicular line G Heart Ans: A 4, B 6, C 1, D 3, E 2, F 7, G Bloom's: Understand Difficulty: Hard Learning Outcome: Recall the structures of the heart, including valves, chambers, and vessels 2- ... number of impulses traveling to the ventricles B Allows for a delay to provide time for the blood to travel from the atria to the ventricles before they contract (atrial kick) C Causes a loss of... number of impulses traveling to the ventricles B Allows for a delay to provide time for the blood to travel from the atria to the ventricles before they contract (atrial kick) C Causes a loss of... Electrical impulses that are carried through the heart by the electrical conduction system form the basis for the ECG tracing True False 59 Cardiac contraction occurs when electrical impulses cause