Thrombocytes are essential for coagulation of blood.comment.

Explanation

**Step-by-Step Solution:**

1. **Introduction to Thrombocytes:**
- Thrombocytes, commonly known as platelets, are a crucial component of blood. They are one of the cellular elements found in blood, alongside red blood cells and white blood cells.

2. **Formation and Lifespan:**
- Thrombocytes are produced in the bone marrow and have a relatively short lifespan of about one week. Their normal count in blood is approximately 250,000 per cubic millimeter.

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