Diapedesis means

Options

A. Movement of the food in gut
B. Formation ofWBCs
C. The process by which monocytes and neutrophils squeeze through thin capillary wall
D. Formation of RB Cs

Answer

**Step-by-Step Solution:**

1. **Understanding Diapedesis**: Diapedesis refers to the process by which blood cells, particularly white blood cells (WBCs) or leukocytes, move out of the bloodstream and into surrounding tissues. This is crucial for the immune response.

2. **Identifying the Correct Definition**: The correct definition of diapedesis involves the movement of leukocytes through intact capillary walls into the surrounding body tissues. This is a key mechanism for the immune system to respond to infection or injury.

3. **Eliminating Incorrect Options**:
- The first option refers to the movement of food in the gut, which is known as peristalsis. This is not related to diapedesis.
- The second option discusses the formation of WBCs, which is called hematopoiesis, and is also not related to diapedesis.
- The fourth option mentions the formation of red blood cells (RBCs), known as erythropoiesis, which again is not related to diapedesis.

4. **Confirming the Correct Option**: The third option correctly describes diapedesis as the process by which monocytes and neutrophils (types of WBCs) squeeze through capillary walls. This movement is essential for the immune response, allowing leukocytes to reach sites of infection or tissue damage.

5. **Conclusion**: Diapedesis is specifically the movement of leukocytes out of the circulatory system towards the site of infection, which is vital for protecting the body and preventing further infection or tissue damage.

**Final Answer**: Diapedesis is the process by which monocytes and neutrophils squeeze through the capillary wall into surrounding tissues.

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