Final answer:
About 60% of the hematopoietic activity in bone marrow is focused on generating erythrocytes (red blood cells), which are a critical component of the circulatory system.
Step-by-step explanation:
The hematopoietic activity of bone marrow is primarily dedicated to the production of erythrocytes (red blood cells), which comprise the majority of cells found in blood. Erythrocytes are derived from the myeloid cell line of hematopoietic stem cells and are responsible for transporting respiratory gases like oxygen and carbon dioxide to and from the tissues and lungs.
Approximately 60% of hematopoietic activity in the bone marrow is devoted to forming these vital cells. In addition, the bone marrow produces other formed elements such as leukocytes (white blood cells), megakaryocytes that give rise to thrombocytes (platelets), and the lymphoid stem cells that differentiate into B cells, T cells, and natural killer (NK) cells crucial for the immune response.