ANF, Is secrets by

Options

A. Venous wall of heart
B. atrial wall of heart
C. Both (1) and (2)
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding ANF**: ANF stands for Atrial Natriuretic Factor, which is also known as Atrial Natriuretic Peptide (ANP). It is a hormone that plays a crucial role in regulating blood pressure and fluid balance in the body.

2. **Source of ANF**: The question asks where ANF is secreted from. ANF is specifically secreted by the heart, particularly from the atrial walls.

3. **Identifying the Correct Answer**: Among the options provided:
- Venous walls of the heart
- Atrial wall of the heart
- Both one and two
- None of these

The correct answer is the "Atrial wall of the heart" since ANF is released in response to the stretching of the atrial walls due to increased blood volume.

4. **Conclusion**: Therefore, the answer to the question "ANF is secreted by" is the atrial wall of the heart.

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