Blood bank of body is `:-`

Options

A. Liver
B. Spleen
C. Heart
D. Bone marrow

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the organ in the body that functions as a "blood bank." This means we are looking for an organ that stores blood or has a significant role in blood storage and purification.

2. **Analyzing the Options**:
- **Liver**: The liver is primarily involved in detoxification and metabolism, not specifically in blood storage.
- **Spleen**: The spleen is known for its role in filtering blood and storing blood cells, making it a strong candidate for the "blood bank" of the body.
- **Heart**: The heart's primary function is to pump blood throughout the body; it does not store blood.
- **Bone Marrow**: While bone marrow is essential for the production of blood cells, it does not serve as a storage organ for blood.

3. **Identifying the Correct Answer**: Given that the spleen is responsible for storing blood and acts as a reservoir, especially during emergencies (like hemorrhagic conditions), it is identified as the "blood bank" of the body.

4. **Conclusion**: The correct answer is the spleen, as it plays a crucial role in blood storage and purification.

**Final Answer**: The blood bank of the body is the **spleen**.

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