ECG Week 1-3 quizzes MC questions
In the heart's conduction system, Purkinje fibers
the _____ receive(s) an electrical
impulse from the right and left
bundle branches and relay(s) it to
the ventricular myocardium.
A. Purkinje fibers
B. atrial pacemaker cells
C. AV node
D. SA node
Stimulation of beta2 receptor sites dilation of bronchial smooth muscle
results in
_____.
A. peripheral vasoconstriction
B. constriction of renal blood vessels
C. increased heart rate
D. dilation of bronchial smooth
muscle
Blood leaves the left ventricle Aortic
through the
___valve to the aorta and its
branches and
is distributed throughout the body.
A. tricuspid
B. pulmonic
C. mitral
D. aortic
In sinus arrhythmia, a gradual inspiration
increasing of the heart rate is
usually associated with
_______________________________
_.
A. expiration
B. early signs of heart failure
C. excessive caffeine intake
D. inspiration
, Blood flows from the left atrium mitral
through the valve into the
left ventricle.
A. tricuspid
B. aortic
C. pulmonic
D. mitral
Chronotropy refers to an effect on heart rate
_____________________________.
A. bronchial smooth muscle
B. force of contraction
C. heart rate
D. speed of conduction
through the
atrioventricular node
Which part of the conduction Right and left bundle branches
system receives an impulse from
the bundle of His and relays it to
the Purkinje fibers?
A. AV node
B. Right and left atria
C. SA node
D. Right and left bundle branches
On an ECG, what is the first Q wave
negative deflection seen
after the P wave?
A. T wave
B. R wave
C. S wave
D. Q wave
The rate of sinus tachycardia is _____ faster than 100
beats/min.
A. 60 to 100
B. faster than 100
C. 40 to 80
D. slower than 60
An ECG rhythm strip shows a tachycardia
ventricular rate of 128 beats/min,
a regular rhythm, a PR interval of
0.16 second, a QRS duration of
0.08 second, and one upright P
wave before each QRS. This
rhythm is sinus
_____________________________
In the heart's conduction system, Purkinje fibers
the _____ receive(s) an electrical
impulse from the right and left
bundle branches and relay(s) it to
the ventricular myocardium.
A. Purkinje fibers
B. atrial pacemaker cells
C. AV node
D. SA node
Stimulation of beta2 receptor sites dilation of bronchial smooth muscle
results in
_____.
A. peripheral vasoconstriction
B. constriction of renal blood vessels
C. increased heart rate
D. dilation of bronchial smooth
muscle
Blood leaves the left ventricle Aortic
through the
___valve to the aorta and its
branches and
is distributed throughout the body.
A. tricuspid
B. pulmonic
C. mitral
D. aortic
In sinus arrhythmia, a gradual inspiration
increasing of the heart rate is
usually associated with
_______________________________
_.
A. expiration
B. early signs of heart failure
C. excessive caffeine intake
D. inspiration
, Blood flows from the left atrium mitral
through the valve into the
left ventricle.
A. tricuspid
B. aortic
C. pulmonic
D. mitral
Chronotropy refers to an effect on heart rate
_____________________________.
A. bronchial smooth muscle
B. force of contraction
C. heart rate
D. speed of conduction
through the
atrioventricular node
Which part of the conduction Right and left bundle branches
system receives an impulse from
the bundle of His and relays it to
the Purkinje fibers?
A. AV node
B. Right and left atria
C. SA node
D. Right and left bundle branches
On an ECG, what is the first Q wave
negative deflection seen
after the P wave?
A. T wave
B. R wave
C. S wave
D. Q wave
The rate of sinus tachycardia is _____ faster than 100
beats/min.
A. 60 to 100
B. faster than 100
C. 40 to 80
D. slower than 60
An ECG rhythm strip shows a tachycardia
ventricular rate of 128 beats/min,
a regular rhythm, a PR interval of
0.16 second, a QRS duration of
0.08 second, and one upright P
wave before each QRS. This
rhythm is sinus
_____________________________
