Spleen stores

Options

A. RBCs
B. Lymphocytes
C. Iron
D. All the above.

Answer

### Step-by-Step Solution:

1. **Understanding the Spleen's Function**:
- The spleen is recognized as the largest lymphoid organ in the human body. It plays a crucial role in the immune system and blood filtration.

2. **Location of the Spleen**:
- The spleen is situated under the rib cage and above the stomach in the abdominal cavity.

3. **Storage Functions of the Spleen**:
- The spleen is responsible for storing several important components:
- **Red Blood Cells (RBCs)**: The spleen stores red blood cells, which are essential for transporting oxygen throughout the body.
- **Lymphocytes**: These are a type of white blood cell that plays a significant role in the immune response.
- **Iron**: The spleen also stores iron, which is vital for the production of hemoglobin in red blood cells.

4. **Recycling of Blood Components**:
- The spleen helps recycle old and dead red blood cells. This process is essential for maintaining healthy blood cell levels and ensuring that the body can effectively use iron.

5. **Conclusion**:
- Given that the spleen stores red blood cells, lymphocytes, and iron, the correct answer to the question "Spleen stores" is **all the above**.

### Final Answer:
The spleen stores **all of the above**: red blood cells, lymphocytes, and iron.

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