What is the role of blood in the body?

Blood consists of a liquid in which cells are evenly dissolved. Among the blood cells, there are small red particles – red blood cells. They carry oxygen to every organ. Back erythrocytes carry carbon dioxide – this is how the breathing processes are carried out. Other cells – leukocytes – work as defenders of the immune system. They fight bacteria and viruses that enter the body from the outside. The next group of blood cells is platelets. These are small plates that help the body fight bleeding. In the event of any injury, platelets clump together to form a large blood clot.