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Chapter 8: Problem 3

Ventricular relaxation immediately follows _____. a. atrial depolarization b. ventricular repolarization c. ventricular depolarization d. atrial repolarization

Short Answer

Expert verified
a. Atrial depolarization b. Ventricular repolarization c. Ventricular depolarization d. Atrial repolarization

Step by step solution

01

Recall the cardiac cycle

In order to solve this problem, you need to recall the different stages of the cardiac cycle and their order. The cardiac cycle consists of atrial and ventricular contraction and relaxation (systole and diastole), as well as electrical events (depolarization and repolarization) that regulate these mechanical processes.
02

Identify the stages

Now that you know the cardiac cycle, identify the stages that are mentioned in the answer choices: a. Atrial depolarization b. Ventricular repolarization c. Ventricular depolarization d. Atrial repolarization
03

Determine the correct answer

With the stages identified, you can now determine the correct answer. Ventricular relaxation follows ventricular repolarization, as this is the electrical event that drives the mechanical relaxation process. Therefore, the correct answer is: b. Ventricular repolarization

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Most popular questions from this chapter

Which ch amber initially receives blood from the systemic circuit? a. left atrium b. left ventricle c. right atrium d. right ventricle

Which portion of the ECG corresponds to repolarization (i.e. relaxation) of the atria? a. \(\mathrm{P}\) wave b. QRS complex c. T wave d. none of the above: atrial repolarization is masked by ventricular depolarization

How does the delay of the impulse at the atrioventricular node contribute to cardiac function?

Describe one cardiac cycle, beginning with both atria and ventricles relaxed.

The first heart sound represents which portion of the cardiac cycle? a. atrial systole b. ventricular systole c. closing of the atrioventricular valves d. closing of the semilunar valves
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