Expand the following terms :
ANF

Answer

**Step-by-Step Solution:**

1. **Identify the Acronym**: The term "ANF" is an acronym that needs to be expanded.

2. **Break Down the Components**: The acronym "ANF" can be broken down into three parts:
- A: Atrial
- N: Natriuretic
- F: Factor

3. **Combine the Components**: When we combine these parts, we get "Atrial Natriuretic Factor".

4. **Define the Expanded Term**: Atrial Natriuretic Factor (ANF) is a hormone-like substance that is produced in the heart, specifically in the atria (the upper chambers of the heart).

5. **Explain its Function**: ANF plays a crucial role in regulating blood pressure and fluid balance. It is secreted by the heart in response to increased blood volume and pressure, and it acts on the kidneys to promote the excretion of sodium, which in turn helps to reduce blood volume and pressure.

**Final Answer**: ANF stands for Atrial Natriuretic Factor.

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