Why is spleen known as hematopoietic and haemolytic tissue?

Explanation

**Step-by-Step Solution:**

1. **Understanding the Functions of the Spleen:**
- The spleen is an organ located in the upper left part of the abdomen. It plays a crucial role in the body’s circulatory and immune systems.

2. **Hematopoietic Function:**
- The term "hematopoietic" refers to the formation of blood cells. The spleen is involved in the production of red blood cells (RBCs) and white blood cells (WBCs), especially during fetal development. Even in adults, the spleen can produce certain types of blood cells when necessary, such as during times of increased demand.

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