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Chapter: 12.2 / Q: 46
What feature distinguishes pacemaker cardiac cells from other cardiac cells? Pacemaker cardiac cells:
Chapter: 12.2 / Q: 47
In a normal ECG trace, what does a QRS wave indicate?
Chapter: 12.2 / Q: 48
What would be a possible consequence of the SA node failing to depolarise?
Chapter: 12.2 / Q: 49
By what means does an electrical signal travel from the atria to the ventricles? Via:
Chapter: 12.2 / Q: 50
Which one of the following descriptions or statements about an electrocardiogram (ECG) is NOT correct?
Chapter: 12.2 / Q: 51
Which of the following does limb lead II of a typical electrocardiogram represent?
Chapter: 12.2 / Q: 52
Which of the following events occur during early ventricular systole?
Chapter: 12.2 / Q: 53
When listening to the “lub-dup” sound of the heart with a stethoscope, what is the cause of the “dup” sound?
Chapter: 12.2 / Q: 54
What feature distinguishes pacemaker cardiac cells from other myocardial cells? Pacemaker cells:
Chapter: 12.2 / Q: 55
What structure in the heart prevents backflow of blood into the right atrium?
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