Pulse wave is mainly caused by the :

Options

A. Systole of atria
B. Diastole of atria
C. Systole of the left ventricle
D. Systole of the right ventricle

Explanation

**Step-by-Step Solution:**

1. **Understanding the Cardiac Cycle**: The cardiac cycle consists of two main phases: systole and diastole. Systole is when the heart muscles contract, and diastole is when they relax.

2. **Identifying the Role of the Left Ventricle**: Among the chambers of the heart, the left ventricle plays a crucial role during systole. When the left ventricle contracts (during systole), it pumps oxygenated blood into the aorta.

3. **Ejection of Blood**: The contraction of the left ventricle leads to the ejection of blood into the aorta. This ejection is a rapid process that creates a surge of blood flow.

4. **Increase in Blood Pressure**: The sudden ejection of blood into the aorta causes a rapid increase in blood pressure within the arteries. This increase in pressure is what creates the pulse wave.

5. **Formation of Pulse Waves**: The pulse wave is essentially a pressure wave that travels through the arteries as a result of the ejection of blood from the heart. It can be felt as a pulse at various points in the body.

6. **Conclusion**: Therefore, the pulse wave is mainly caused by the systole of the left ventricle, as it is the contraction of this chamber that initiates the pressure changes leading to the formation of pulse waves.

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