Which of the following is the most likely consequence of a very rapid heart rate?
A) Decreased ventricular filling (with blood)
B) Failure of the AV valves to open
C) Failure of the SA node to fire
D) Failure of the cardiac impulse to enter the His-Purkinje system
Correct Answer:
Verified
Q15: What term refers to the amount of
Q16: Sympathetic nerve stimulation of the myocardium
A)causes a
Q17: A drug (e.g. ,atropine) that blocks the
Q18: What happens during ventricular diastole?
A)The ventricles are
Q19: Which of the following is most likely
Q21: Increased afterload (e.g. ,hypertension)
A)is usually caused by
Q22: An ejection fraction of 30% is
A)normal.
B)characteristic of
Q23: Which of the following most accurately describes
Q24: Vagal stimulation on the heart
A)increases the force
Q25: Which of the following is approximately 70
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