ECG Chapter 2
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Each electrical activity of the heart is recorded on the ECG strip
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True
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False
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Quiz Preview
- 2.
blood that has little or no oxygen
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Oxygenated blood
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Deoxygenated blood
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Cardiac cycle
Correct Answer
A. Deoxygenated blood -
- 3.
The major blood vessels that transport blood to and from the heart are the vena cava, pulmonary artery, pulmonary veins, and the aorta
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True
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False
Correct Answer
A. True -
- 4.
blood having oxygen
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Oxygenated blood
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Deoxygenated blood
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Diastole
Correct Answer
A. Oxygenated blood -
- 5.
The process of transporting blood to and from the body tissues is known as circulation
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True
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False
Correct Answer
A. True -
- 6.
What is the middle layer of the heart or th musular layer?
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Endocardium
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Myocardium
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Epicardium
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Pericardium
Correct Answer
A. Myocardium -
- 7.
valve located between the right atrium and right ventricle
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Mitral valve
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Tricuspid valve
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Semilunar valve
Correct Answer
A. Tricuspid valve -
- 8.
启动 initiates the heartbeat
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SA node
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AV node
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Excitability
Correct Answer
A. SA node -
- 9.
period between the beginning of one beat of the heart to the next
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Cardiac cycle
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Systole
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Diastole
Correct Answer
A. Cardiac cycle -
- 10.
The PR interval is usually
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0.06 to 0.10 second
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0.12 to 0.20 second
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Greater than 0.20 second
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Less than 0.06 second
Correct Answer
A. 0.12 to 0.20 second -
- 11.
What wave on the ECG tracing is not always seen and sonetimes when seen can indicate an electrolyte imbalance?
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U wave
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P wave
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Q wave
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R wave
Correct Answer
A. U wave -
- 12.
separates left atrium and left ventricl
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Mitral (bicuspid) atrioventricular
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Aortic semilunar
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Tricuspid atrioventricular
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Pulmonary smilunar
Correct Answer
A. Mitral (bicuspid) atrioventricular -
- 13.
initiates heart at a rate of 60-100 beats per minute with electrical impulse that cause depolarization
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Sinoatrial (SA) node (pacemaker)
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Atrioventricular (AV) node
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Bundle of His (AV bundle)
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Bundle branches
Correct Answer
A. Sinoatrial (SA) node (pacemaker) -
- 14.
artery that transports blood to the entire body
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Aorta
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Right atrium
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Right ventricle
Correct Answer
A. Aorta -
- 15.
What part of the ECG tracing is measured from the end of the S wave to the beginning of the T wave and is normally on the isoelectrial line?
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ST segment
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QT segnent
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U wave
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QRS complex
Correct Answer
A. ST segment -
- 16.
The sympathetic system of the body causes the heart rate to
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Increase
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Decrease
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Remain the same
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None of the above
Correct Answer
A. Increase -
- 17.
phase of the cardiac cycle when the heart is expanding and refilling; also known as the relaxation phase
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Cardiac cycle
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Diastole
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Systole
Correct Answer
A. Diastole -
- 18.
type of valve located in the aorta and the pulmonary artery
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Aorta
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Mitral valve
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Semilunar valve
Correct Answer
A. Semilunar valve -
- 19.
atrioventricular valve between the left atrium and left ventricle
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Semilunar valve
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Mitral valve
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Aorta
Correct Answer
A. Mitral valve -
- 20.
heart chamber that pumps blood to the body, known as the workhorse of the heart
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Right ventricle
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Right atrium
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Left ventricle
Correct Answer
A. Left ventricle -
- 21.
separates right atrium and right ventricle
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Pulmonary smilunar
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Tricuspid atrioventricular
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Aortic semilunar
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Mitral (bicuspid) atrioventricular
Correct Answer
A. Tricuspid atrioventricular -
- 22.
heart muscle cells return to their resting electrical state and the heart muscle relaxes
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Repolarization
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Depolarization
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Polarization
Correct Answer
A. Repolarization -
- 23.
The heart is contained inside a sac also known as the
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Endocardium
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Pericardial sac
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Myocardium sac
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Fluid sac
Correct Answer
A. Pericardial sac -
- 24.
transportation of blood to and from the lungs
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Coronary circulation
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Systemic circulation
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Pulmonary cirulation
Correct Answer
A. Pulmonary cirulation -
- 25.
The heart's ability to create its own electrical impulse is known as
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Conductivity
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Contractility
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Automaticity
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Excitability
Correct Answer
A. Automaticity -
- 26.
Which electrical stimulation is shown by the return to the resting phase of the heart?
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Polarization
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Repolarization
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Depolarization
Correct Answer
A. Repolarization -
- 27.
inner layer of the heart that lines the chamber and valves, The Purkinje are located here
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Endocardium
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Myocardium
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Epicardium
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Pericardium
Correct Answer
A. Endocardium -
- 28.
Which electrical event is represented by the cardiac contraction of the heart?
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Polarization
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Depolarization
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Repolarization
Correct Answer
A. Depolarization -
- 29.
delays the electrical conduction through the heart
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AV node
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SA node
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Purkinje fibers
Correct Answer
A. AV node -
- 30.
the ability of the heart to initiate an electrical impulse without being stimulated by another or independent source.
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Conductivity
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Exitability
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Automaticity
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Contractility
Correct Answer
A. Automaticity -
- 31.
branches off the bundle of His that conduct impulses to the left and right ventricles
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Bundle branches
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Purkinje fibers
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Repolarization
Correct Answer
A. Bundle branches -
- 32.
ability of the heart muscle cells to shorten in response to an electrical stimulus
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Conductivity 电导率
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Automaticity
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Contractility 收缩
Correct Answer
A. Contractility 收缩 -
- 33.
分配 distribute electrical impulses from cell to cell throughout the ventricles
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Excitability
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Depolarization
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Purkinje fibers
Correct Answer
A. Purkinje fibers -
- 34.
heart chamber that receives blood from the lungs
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Left atrium
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Left ventricle
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Right atrium
Correct Answer
A. Left atrium -
- 35.
contraction phase of the cardiac cycle, when the heart is pumping blood out to the body
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Systole
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Cardiac cycle
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Diastole
Correct Answer
A. Systole -
- 36.
this ability of the heart muscle cells to shorten in response to an electrical stimulus is call
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Contractility
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Conductivity
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Exitability
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Automaticity
Correct Answer
A. Contractility -
- 37.
the ability of the heart cells to receive and transmit an electrical impulses
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Conductivity
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Automaticity
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Exitability
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Contractility
Correct Answer
A. Conductivity -
- 38.
chamber of the heart that receives blood from the body
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Left atrium
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Left ventricle
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Right atrium
Correct Answer
A. Right atrium -
- 39.
ability of the heart to initiate an electrical impulse 电脉冲启动
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Excitability
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Automaticity
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Conductivity
Correct Answer
A. Automaticity -
- 40.
circulation between the heart and the entire body exluding the lungs
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Pulmonary cirulation
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Systemic circulation
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Coronary circulation
Correct Answer
A. Systemic circulation -
- 41.
A double-layer sac that encloses the heart. The inner layer, or visceral pericardium, is also called the epicardium; the outer is the parietal pericardium
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Pericardium
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Epicardium
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Myocardium
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Endocardium
Correct Answer
A. Pericardium -
- 42.
ability of the heart cells to receive and transmit an electrical impulse
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Excitability
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Automaticity
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Conductivity
Correct Answer
A. Conductivity -
- 43.
blood vessel that transports blood from the lungs to the left atrium
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Pulmonary vein
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Right pulmonary artery
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Left pulmonary arteries
Correct Answer
A. Pulmonary vein -
- 44.
chamber of the heart that pumps blood to the lungs
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Right ventricle
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Left ventricle
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Right atrium
Correct Answer
A. Right ventricle -
- 45.
an electrical current that initiates the contraction of the heart muscle
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Depolarization
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Repolarization
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Polarization
Correct Answer
A. Depolarization -
- 46.
circulation of blood through the heart and heart muscle
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Systemic circulation
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Pulmonary cirulation
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Coronary circulation
Correct Answer
A. Coronary circulation -
- 47.
What are the first vessels to branch off the aorta known as?
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Pulmonary arteries
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Interventricular arteries
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Coronary arteries
Correct Answer
A. Coronary arteries -
- 48.
Outside, thin layer of the heart that contains the coronary arteries; also the inner layer of the pericardium
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Endocardium
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Myocardium
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Epicardium
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Pericardium
Correct Answer
A. Epicardium -
- 49.
between left ventricle and aorta
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Aortic semilunar
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Pulmonary smilunar
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Tricuspid atrioventricular
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Mitral (bicuspid) atrioventricular
Correct Answer
A. Aortic semilunar -
Quiz Review Timeline (Updated): Jan 24, 2013 +
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Current Version
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Jan 24, 2013Quiz Edited by
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Apr 06, 2011Quiz Created by
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