Understanding Blood Components: Plasma, Red Blood Cells, White Blood Cells & Platelets
Plasma is the liquid part of blood that makes up about 55% of its volume. It is composed of water, electrolytes, proteins, hormones, and waste products.
Red blood cells are also called erythrocytes. They make up about 45% of blood volume and contain hemoglobin, a protein that carries oxygen.
White blood cells are also called leukocytes. They make up less than 1% of blood volume but are essential for fighting infection.
Platelets are also called thrombocytes. They make up less than 1% of blood volume and are essential for blood clotting.
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