Which one of the following alphabets is the correct representation of the electrical activity of the human heart and the name given to the wave ?

Options

A. P-depolarisation of the atria
B. R-repolarisation of ventricles
C. S-start of systole
D. T-end of diastole

Answer

To solve the question regarding the correct representation of the electrical activity of the human heart and the name given to the wave, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the ECG**: The electrical activity of the heart is recorded using an electrocardiogram (ECG). The machine used to record this is called an electrocardiograph.

2. **Identifying the Waves**: The ECG consists of several waves that represent different phases of the heart's electrical activity. The primary waves include:
- **P Wave**: Represents atrial depolarization (the electrical activity that causes the atria to contract).
- **QRS Complex**: Represents ventricular depolarization (the electrical activity that causes the ventricles to contract).
- **T Wave**: Represents ventricular repolarization (the electrical activity that leads to the relaxation of the ventricles).

3. **Analyzing the Options**: The question likely provides multiple choice answers. We need to analyze each option based on the definitions of the waves:
- If an option describes the P wave correctly as related to atrial depolarization, it is likely the correct answer.
- If an option describes the QRS complex incorrectly or mislabels the T wave, it is likely incorrect.

4. **Conclusion**: Based on the analysis, the correct representation of the electrical activity of the heart is the P wave, which signifies atrial depolarization. Therefore, the correct answer would be the option that represents the P wave.

### Final Answer:
The correct representation of the electrical activity of the human heart is the **P wave**, which indicates atrial depolarization.

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