CH. 19 part 3
Heart Physiology Quiz
Test your knowledge on cardiac physiology with this engaging quiz! Perfect for students, teachers, and anyone interested in understanding the fascinating workings of the heart.
Sharpen your understanding of heart rhythms, fun
- Identify the effects of SA node damage
- Understand cardiac output and reserve
- Recognize heart sounds and their significance
If the sinuatrial (SA) node is damaged, the heart will likely beat at __________ bpm.
10 to 20
0 to 10
70 to 80
20 to 40
40 to 50
The difference between the maximum and resting cardiac output is called __________.
Contractility
Afterload
Cardiac reserve
Stroke volume
Preload
Mitral valve prolapse (MVP) generates a murmur associated with the __________ heart sound that occurs when the __________.
Lubb (S1); ventricles relax
Lubb (S1); ventricles contract
Dupp (S2); atria relax
Dupp (S2); ventricles relax
Lubb (S1); atria contract
Which term refers to relaxation of the heart?
Bradycardia
DiastoleCorrect
Asystole
Systole
Fibrillation
The plateau in the action potential of cardiac muscle results from the action of __________.
K+ inflow
Fast Ca2+ channels
K+ outflow
Slow Ca2+ channels
Na+ inflow
When the aortic semilunar valve closes and blood bounces off of it, it produces the __________ heart sound that is ultimately related to when the __________.
Lubb (S1); ventricles contract
Dupp (S2); ventricles relax
Lubb (S1); atria contract
Lubb (S1); ventricles relax
Dupp (S2); atria relax
What is the ability to rhythmically depolarize without outside stimulation called?
Automatic
Autorhythmic
Contractile
Autonomic
Myogenic
Atrial depolarization causes the _________.
T wave
P wave
QRS complex
First heart sound
Quiescent period
Any abnormal cardiac rhythm is called a(n) __________.
Ectopic focus
Arrhythmia
Sinus rhythm
Heart block
Nodal rhythm
Sometimes your patient experiences two ventricular contractions to a single atrial contraction. Which arrhythmia do you think they might have?
Ventricular fibrillation
Total heart block
Bundle branch block
Atrial fibrillation
Preventricular contraction
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