The process of a white blood cell squeezing between cells exit the blood vessel is called :

Options

A. Diapedesis
B. Leucopoiesis
C. Haempoiesis
D. Phagocytosis

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the process by which white blood cells (WBCs) exit blood vessels by squeezing between the cells of the vessel walls.

2. **Identifying the Options**: The options provided are:
- A) Diabetes
- B) Leukopoiesis
- C) Hemopoiesis
- D) Phagocytosis

3. **Analyzing Each Option**:
- **A) Diabetes**: This term is commonly associated with a metabolic disorder related to insulin and blood sugar levels. It is not related to the movement of white blood cells.
- **B) Leukopoiesis**: This refers to the formation of white blood cells in the bone marrow. It does not describe the movement of WBCs out of blood vessels.
- **C) Hemopoiesis**: This is the process of producing all types of blood cells, including red blood cells, white blood cells, and platelets. It does not relate to the exit of WBCs from blood vessels.
- **D) Phagocytosis**: This is the process by which certain cells (phagocytes) engulf and digest particles, such as bacteria. While it involves WBCs, it does not describe the process of exiting blood vessels.

4. **Correct Answer**: The correct term for the process of white blood cells squeezing between cells to exit the blood vessel is known as **Diapedesis** (not Diabetes as mentioned in the transcript).

5. **Conclusion**: Therefore, the correct answer to the question is **Diapedesis**.