The heart murmur is due to

Options

A. Coronary thrombosis
B. Defective leaky valve
C. Arterial pulse
D. developed atrium

Answer

**Step-by-Step Solution:**

1. **Understanding Heart Murmur**: A heart murmur is an unusual sound heard during a heartbeat. It can be a sign of an underlying heart condition.

2. **Evaluating Options**:
- **Coronary Thrombosis**: This refers to the formation of a blood clot in the coronary arteries. While it can lead to serious heart issues, it is not directly responsible for causing heart murmurs.
- **Defective Leaky Valve**: This occurs when the heart valves do not close properly, allowing blood to flow backward. This backflow creates turbulence in the blood flow, which can be heard as a murmur.
- **Arterial Blast**: This term is not commonly associated with heart murmurs. It may refer to issues with arteries but does not directly relate to the sounds produced by the heart.
- **Developed Arterium**: This option seems to be a misunderstanding of terms. The atria (plural of atrium) are chambers of the heart, and while they play a role in blood flow, they do not directly cause murmurs.

3. **Identifying the Correct Answer**: Among the options, the most relevant cause of a heart murmur is a defective leaky valve. This is due to the improper closure of the valve, leading to abnormal blood flow sounds.

4. **Conclusion**: Therefore, the heart murmur is primarily due to a defective leaky valve.

**Final Answer**: The heart murmur is due to a defective leaky valve.

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