Modern Concepts of Hemopoiesis

This paper presents information on the blood system, which includes hematopoietic organs and peripheral blood cells, united by neurohumoral regulation of the dynamic processes of hematopoiesis and hematopoietic breakdown. It is shown that cells gradually age, the enzyme composition and structure of cell membranes change, and energy production decreases, leading to their destruction. Monocytes circulate briefly in the peripheral blood; they are carried by the bloodstream to organs and tissues and transform into macrophages, forming the mononuclear phagocyte system.