Which of the following represents repolarization wave in the given diagram ?

Options

A. P
B. QRS
C. T
D. All of the above

Answer

To determine which wave represents repolarization in the given ECG diagram, we can follow these steps:

### Step 1: Understand the ECG Waves
The ECG consists of several waves, primarily the P wave, QRS complex, and T wave. Each of these waves corresponds to different electrical activities of the heart.

### Step 2: Identify the Waves
- **P Wave**: Represents atrial depolarization (the contraction of the atria).
- **QRS Complex**: Represents ventricular depolarization (the contraction of the ventricles).
- **T Wave**: Represents ventricular repolarization (the relaxation of the ventricles).

### Step 3: Focus on Repolarization
Repolarization refers to the process of the heart muscle cells returning to their resting state after contraction. In the context of the ECG:
- The T wave is specifically associated with the repolarization of the ventricles.

### Step 4: Conclusion
Based on the analysis, the wave that represents repolarization in the ECG is the **T wave**.

### Final Answer
The correct answer is **Option 3: T wave**.

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