Spleen is

Options

A. Hematopoeitic
B. Lymphoid
C. Reproductive
D. Celluloid

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks to identify what type of organ the spleen is among the given options: hematopoietic, lymphoid, reproductive, or celluloid.

2. **Location of the Spleen**: The spleen is located in the upper left part of the abdomen, beneath the rib cage. This anatomical position is important for understanding its functions.

3. **Classification of the Spleen**: The spleen is classified as a lymphoid organ. It is a part of the lymphatic system, which plays a crucial role in the immune response.

4. **Functions of the Spleen**:
- **Blood Filtration**: The spleen acts as a filter for blood, removing old or damaged red blood cells (RBCs).
- **Recycling of RBCs**: It recycles old RBCs, breaking them down and reusing components such as iron.
- **Storage of Blood Components**: The spleen stores platelets and white blood cells, which are essential for immune function.

5. **Evaluating Other Options**:
- **Hematopoietic**: This term refers to stem cells that produce blood cells, which is not the primary function of the spleen.
- **Reproductive**: The spleen is not involved in reproduction; reproductive organs include testes in males and ovaries in females.
- **Celluloid**: This term does not refer to any biological structure or function in the human body.

6. **Conclusion**: Based on the functions and classification, the correct answer is that the spleen is a lymphoid organ.

**Final Answer**: The spleen is a lymphoid organ.

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