Red Blood Cells, White Blood Cells, and Platelets: Distinct Roles in Blood
Blood contains three main cellular components:
- Red blood cells (erythrocytes) – Transport oxygen from lungs to tissues; remove CO₂.
- White blood cells (leukocytes) – Defend against infection and foreign substances.
- Platelets (thrombocytes) – Essential for blood clotting and preventing excessive bleeding.
Each has a unique, vital function.
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