Blood
Categories: Blood Cells#Cell Biology Kit
Blood is a human tissue composed of a solid portion, the formed elements, and a liquid portion, the plasma. The formed elements correspond to red blood cells, white blood cells and platelets, each with its specific functions. In general, blood serves to transport substances to tissues, providing them with essential compounds such as oxygen and glucose, which will be used by cells for the most diverse functions. The amount of blood in a human body corresponds to 7% of its mass, so a person weighing 70 kg has about 5 liters of blood.
