1 курс 1 семестр / шпоры / английский / The blood is the main part of the vascular system

The blood is the main part of the vascular system. Blood is a liquid tissue with many different functions. Blood consists of plasma and corpuscular elements. They are red blood cells (erythrocytes), white blood cells (leukocytes) and blood platelets (thrombocytes).

About 65 per cent of all white cells are leukocytes. The function of leukocytes is to protect against infection. This process is called phagocytosis.

Erythrocytes are the most numerous cellular elements. Erythrocytes are very important in the function of respiration. . The most important part of the red cell is its red substance or hemoglobin. The average volume of human blood is 5 liters