How Does The Blood Made From Bone Marrow Get Into The Blood Vessels Of The Body?

The bone marrow is rich in blood vessels, and the mature blood cells made by the bone marrow are released from the blood sinuses in the bone marrow through the central vein of the bone marrow and into the surrounding blood. Bone marrow is a hematopoietic organ. The bone marrow that can produce blood cells is called red bone marrow. The red bone marrow is mainly composed of hematopoietic tissue and blood sinuses. Hematopoietic tissue is filled with various blood cells at different stages of development, as well as hematopoietic stem cells and so on. Sinuses are large, tortuous branches of arterial capillaries that eventually enter the central vein of the bone marrow and enter the bloodstream.