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The end of T-wave marks the end of...

The end of T-wave marks the end of

A

ventricular diastole

B

ventricular systole

C

Auricular systole

D

Auricular diastole

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question "The end of T-wave marks the end of", we need to analyze the components of the electrocardiogram (ECG) and understand what the T-wave represents in the cardiac cycle. ### Step-by-Step Solution: 1. **Understanding the ECG Waves**: The electrocardiogram (ECG) consists of several waves, including the P wave, QRS complex, and T wave. Each of these waves corresponds to specific electrical activities in the heart. 2. **Identifying the P Wave**: The P wave represents atrial depolarization, which is the electrical activity that leads to the contraction of the atria (atrial systole). 3. **Identifying the QRS Complex**: The QRS complex represents ventricular depolarization, which is the electrical activity that leads to the contraction of the ventricles (ventricular systole). 4. **Identifying the T Wave**: The T wave represents ventricular repolarization, which is the process of the ventricles relaxing after contraction. 5. **Understanding the Cardiac Cycle**: The cardiac cycle consists of phases of contraction and relaxation. After the T wave, the ventricles are in a state of relaxation, which is known as diastole. 6. **Conclusion**: The end of the T wave marks the end of ventricular diastole. This is the phase where the ventricles are relaxing and filling with blood. ### Final Answer: The end of the T-wave marks the end of **ventricular diastole**. ---
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