Blood have function to transport oxygen and nutrient to the cells which need it.

The main functions of white blood cells are to carry oxygen and against the diseases as our immune system.

Blood have function to transport carbon dioxide and other waste products go to the cells.

Blood plays a role in blood clotting when an injury occurs.

Blood plasma has a fewer number than blood cells.

Blood also have function to transport hormones and enzymes to all parts of the body.

Hemoglobin in red blood cells (erythrocytes) is a pigment that makes the blue color in the cells and have function to carry oxygen.

Blood will protect us from the diseases only caused by virus.

The main components of the blood are red blood cells, white blood cells, and platelets.

Red blood cells (erythrocytes) have function to transport carbon dioxide and nutrients around your body.

Red blood cells have characteristics: biconcave in shape, have no nucleus, have hemoglobin, produced in bone marrow, elastic, and can live up to 4 months.

The number of red blood cells is the highest among other blood cells.

White blood cells (leucocytes) have characteristics: the shape are bigger than erythrocytes, the number of white blood cells is less than the other blood components, have different shapes and sizes, and made in the bone marrow and lymph.