The phase of contraction of heart is termed as _____.

Options

A. diastole
B. systole
C. heart beat
D. heart sound

Answer

To answer the question, "The phase of contraction of heart is termed as _____," we can follow these steps:

1. **Understanding Cardiac Cycle**: The cardiac cycle consists of two main phases: contraction and relaxation of the heart muscles. The contraction phase is when the heart pumps blood out.

2. **Identifying the Phases**: The two primary phases of the cardiac cycle are:
- **Systole**: This is the phase where the heart muscles contract, and blood is pumped out of the heart into the arteries.
- **Diastole**: This is the phase where the heart muscles relax, allowing the chambers of the heart to fill with blood.

3. **Focusing on Contraction**: Since the question specifically asks for the phase of contraction, we need to identify which term corresponds to this phase.

4. **Conclusion**: The phase of contraction of the heart is termed as **systole**.

Thus, the final answer is:
**Systole**