Composition of blood?

Blood is composed of several components, including:

1. Red blood cells (erythrocytes): These cells carry oxygen from the lungs to the body's tissues and remove carbon dioxide. They make up about 40-45% of the blood volume.

2. White blood cells (leukocytes): These cells are part of the immune system and help defend the body against infections and diseases. There are different types of white blood cells, including neutrophils, lymphocytes, monocytes, eosinophils, and basophils. They make up less than 1% of the blood volume.

3. Platelets (thrombocytes): These small cell fragments help in blood clotting to prevent excessive bleeding. They make up less than 1% of the blood volume.

4. Plasma: This is the liquid component of blood, making up about 55% of the blood volume. Plasma is a yellowish fluid that contains water, proteins (such as albumin, globulins, and fibrinogen), hormones, electrolytes, nutrients, waste products, and other substances.

Overall, blood is a complex mixture of cells, proteins, hormones, and other substances that play vital roles in maintaining the body's functions and homeostasis.

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