ECG Chapter 2
- 1.
The process of transporting blood to and from the body tissues is known as circulation
- A.
True
- B.
False
Correct Answer
A. True -
- 2.
Each electrical activity of the heart is recorded on the ECG strip
- A.
True
- B.
False
Correct Answer
A. True -
- 3.
What is the middle layer of the heart or th musular layer?
- A.
Endocardium
- B.
Myocardium
- C.
Epicardium
- D.
Pericardium
Correct Answer
B. Myocardium -
- 4.
inner layer of the heart that lines the chamber and valves, The Purkinje are located here
- A.
Endocardium
- B.
Myocardium
- C.
Epicardium
- D.
Pericardium
Correct Answer
A. Endocardium -
- 5.
Outside, thin layer of the heart that contains the coronary arteries; also the inner layer of the pericardium
- A.
Endocardium
- B.
Myocardium
- C.
Epicardium
- D.
Pericardium
Correct Answer
C. Epicardium -
- 6.
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
- A.
Pericardium
- B.
Epicardium
- C.
Myocardium
- D.
Endocardium
Correct Answer
A. Pericardium -
- 7.
between left ventricle and aorta
- A.
Aortic semilunar
- B.
Pulmonary smilunar
- C.
Tricuspid atrioventricular
- D.
Mitral (bicuspid) atrioventricular
Correct Answer
A. Aortic semilunar -
- 8.
Between right ventricle and pulmonary artery
- A.
Pulmonary smilunar
- B.
Tricuspid atrioventricular
- C.
Mitral (bicuspid) atrioventricular
- D.
Aortic semilunar
Correct Answer
A. Pulmonary smilunar -
- 9.
separates right atrium and right ventricle
- A.
Pulmonary smilunar
- B.
Tricuspid atrioventricular
- C.
Aortic semilunar
- D.
Mitral (bicuspid) atrioventricular
Correct Answer
B. Tricuspid atrioventricular -
- 10.
separates left atrium and left ventricl
- A.
Mitral (bicuspid) atrioventricular
- B.
Aortic semilunar
- C.
Tricuspid atrioventricular
- D.
Pulmonary smilunar
Correct Answer
A. Mitral (bicuspid) atrioventricular -
- 11.
The major blood vessels that transport blood to and from the heart are the vena cava, pulmonary artery, pulmonary veins, and the aorta
- A.
True
- B.
False
Correct Answer
A. True -
- 12.
What are the first vessels to branch off the aorta known as?
- A.
Pulmonary arteries
- B.
Interventricular arteries
- C.
Coronary arteries
Correct Answer
C. Coronary arteries -
- 13.
initiates heart at a rate of 60-100 beats per minute with electrical impulse that cause depolarization
- A.
Sinoatrial (SA) node (pacemaker)
- B.
Atrioventricular (AV) node
- C.
Bundle of His (AV bundle)
- D.
Bundle branches
Correct Answer
A. Sinoatrial (SA) node (pacemaker) -
- 14.
delays the electrical impulse to allow for the atria to complete their contraction and ventricles to fill before the next contraction
- A.
Bundle branches
- B.
Bundle of His (AV bundle)
- C.
Atrioventricular (AV) node
- D.
Sinoatrial (SA) node (pacemaker)
Correct Answer
C. Atrioventricular (AV) node -
- 15.
conducts electrical impulses from the atria to the ventricles
- A.
Bundle branches
- B.
Atrioventricular (AV) node
- C.
Bundle of His (AV bundle)
- D.
Sinoatrial (SA) node (pacemaker)
Correct Answer
C. Bundle of His (AV bundle) -
- 16.
conducts impulses down both sides of the interventricular septum
- A.
Sinoatrial (SA) node (pacemaker)
- B.
Bundle of His (AV bundle)
- C.
Bundle branches
- D.
Atrioventricular (AV) node
Correct Answer
C. Bundle branches -
- 17.
Distributes the electrical impulses through the right and left ventricles
- A.
Bundle of His (AV bundle)
- B.
Atrioventricular (AV) node
- C.
Purkinje fibers (network)
- D.
Sinoatrial (SA) node (pacemaker)
Correct Answer
C. Purkinje fibers (network) -
- 18.
The ability of the heart muscle cell to repond to a stimulus or impulse is call
- A.
Automaticity
- B.
Exitability
- C.
Conductivity
- D.
Contractility
Correct Answer
B. Exitability -
- 19.
this ability of the heart muscle cells to shorten in response to an electrical stimulus is call
- A.
Contractility
- B.
Conductivity
- C.
Exitability
- D.
Automaticity
Correct Answer
A. Contractility -
- 20.
the ability of the heart cells to receive and transmit an electrical impulses
- A.
Conductivity
- B.
Automaticity
- C.
Exitability
- D.
Contractility
Correct Answer
A. Conductivity -
- 21.
the ability of the heart to initiate an electrical impulse without being stimulated by another or independent source.
- A.
Conductivity
- B.
Exitability
- C.
Automaticity
- D.
Contractility
Correct Answer
C. Automaticity -
- 22.
Which electrical event is represented by the cardiac contraction of the heart?
- A.
Polarization
- B.
Depolarization
- C.
Repolarization
Correct Answer
B. Depolarization -
- 23.
Which electrical stimulation is shown by the return to the resting phase of the heart?
- A.
Polarization
- B.
Repolarization
- C.
Depolarization
Correct Answer
B. Repolarization -
- 24.
Which electrical event is represented by th first state of cellular in the heart?
- A.
Depolarization
- B.
Repolarization
- C.
Polarization
Correct Answer
C. Polarization -
- 25.
artery that transports blood to the entire body
- A.
Aorta
- B.
Right atrium
- C.
Right ventricle
Correct Answer
A. Aorta -
- 26.
type of valve located in the aorta and the pulmonary artery
- A.
Aorta
- B.
Mitral valve
- C.
Semilunar valve
Correct Answer
C. Semilunar valve -
- 27.
atrioventricular valve between the left atrium and left ventricle
- A.
Semilunar valve
- B.
Mitral valve
- C.
Aorta
Correct Answer
B. Mitral valve -
- 28.
heart chamber that pumps blood to the body, known as the workhorse of the heart
- A.
Right ventricle
- B.
Right atrium
- C.
Left ventricle
Correct Answer
C. Left ventricle -
- 29.
heart chamber that receives blood from the lungs
- A.
Left atrium
- B.
Left ventricle
- C.
Right atrium
Correct Answer
A. Left atrium -
- 30.
chamber of the heart that receives blood from the body
- A.
Left atrium
- B.
Left ventricle
- C.
Right atrium
Correct Answer
C. Right atrium -
- 31.
chamber of the heart that pumps blood to the lungs
- A.
Right ventricle
- B.
Left ventricle
- C.
Right atrium
Correct Answer
A. Right ventricle -
- 32.
blood vessel that transports blood from the lungs to the left atrium
- A.
Pulmonary vein
- B.
Right pulmonary artery
- C.
Left pulmonary arteries
Correct Answer
A. Pulmonary vein -
- 33.
valve located between the right atrium and right ventricle
- A.
Mitral valve
- B.
Tricuspid valve
- C.
Semilunar valve
Correct Answer
B. Tricuspid valve -
- 34.
blood vessel that provides a pathway for deoxygenated blood to return to the lungs
- A.
Pulmonary vein
- B.
Left ventricle
- C.
Pulmonary artery
Correct Answer
C. Pulmonary artery -
- 35.
delays the electrical conduction through the heart
- A.
AV node
- B.
SA node
- C.
Purkinje fibers
Correct Answer
A. AV node -
- 36.
ability of the heart to initiate an electrical impulse 电脉冲启动
- A.
Excitability
- B.
Automaticity
- C.
Conductivity
Correct Answer
B. Automaticity -
- 37.
branches off the bundle of His that conduct impulses to the left and right ventricles
- A.
Bundle branches
- B.
Purkinje fibers
- C.
Repolarization
Correct Answer
A. Bundle branches -
- 38.
ability of the heart cells to receive and transmit an electrical impulse
- A.
Excitability
- B.
Automaticity
- C.
Conductivity
Correct Answer
C. Conductivity -
- 39.
an electrical current that initiates the contraction of the heart muscle
- A.
Depolarization
- B.
Repolarization
- C.
Polarization
Correct Answer
A. Depolarization -
- 40.
ability of the heart muscle cells to shorten in response to an electrical stimulus
- A.
Conductivity 电导率
- B.
Automaticity
- C.
Contractility 收缩
Correct Answer
C. Contractility 收缩 -
- 41.
heart muscle cells return to their resting electrical state and the heart muscle relaxes
- A.
Repolarization
- B.
Depolarization
- C.
Polarization
Correct Answer
A. Repolarization -
- 42.
启动 initiates the heartbeat
- A.
SA node
- B.
AV node
- C.
Excitability
Correct Answer
A. SA node -
- 43.
分配 distribute electrical impulses from cell to cell throughout the ventricles
- A.
Excitability
- B.
Depolarization
- C.
Purkinje fibers
Correct Answer
C. Purkinje fibers -
- 44.
The PR interval is usually
- A.
0.06 to 0.10 second
- B.
0.12 to 0.20 second
- C.
Greater than 0.20 second
- D.
Less than 0.06 second
Correct Answer
B. 0.12 to 0.20 second -
- 45.
What part of the ECG tracing represents the repolarization of the bunddle of His and Purkinje fibers?
- A.
T wave
- B.
PR interval
- C.
U wave
- D.
P wave
Correct Answer
C. U wave -
- 46.
What part of the ECG tracing repressents the time it takes for the impulse to activate the myocardium to the complete contraction?
- A.
WRS complex
- B.
J point
- C.
QT interval
- D.
PR interval
Correct Answer
D. PR interval -
- 47.
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?
- A.
ST segment
- B.
QT segnent
- C.
U wave
- D.
QRS complex
Correct Answer
A. ST segment -
- 48.
What wave on the ECG tracing is not always seen and sonetimes when seen can indicate an electrolyte imbalance?
- A.
U wave
- B.
P wave
- C.
Q wave
- D.
R wave
Correct Answer
A. U wave -
- 49.
The heart's ability to create its own electrical impulse is known as
- A.
Conductivity
- B.
Contractility
- C.
Automaticity
- D.
Excitability
Correct Answer
C. Automaticity -
- 50.
The sympathetic system of the body causes the heart rate to
- A.
Increase
- B.
Decrease
- C.
Remain the same
- D.
None of the above
Correct Answer
A. Increase -
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Jan 24, 2013Quiz Edited by
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