Blood platelets are formed from

Options

A. leucocytes
B. megakaryocytes
C. thrombocytes
D. monocytes

Answer

**Step-by-Step Solution:**

1. **Understanding Blood Platelets**: Blood platelets, also known as thrombocytes, are small cell fragments that play a crucial role in blood clotting and wound healing.

2. **Identifying the Source of Platelets**: To determine what blood platelets are formed from, we need to look at the options provided: leukocytes, megakaryocytes, thrombocytes, and monocytes.

3. **Analyzing Each Option**:
- **Leukocytes**: These are white blood cells (WBCs) that are part of the immune system, but they do not form platelets.
- **Megakaryocytes**: These are large cells found in the bone marrow that are responsible for the production of platelets. They undergo a process called fragmentation to release platelets.
- **Thrombocytes**: This is another term for platelets themselves, not a source of their formation.
- **Monocytes**: These are a type of leukocyte and do not contribute to the formation of platelets.

4. **Conclusion**: The correct answer is that blood platelets are formed from **megakaryocytes**.

5. **Final Answer**: Blood platelets are formed from megakaryocytes.

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