Structure and function of the bone marrow and hematopoiesis.


Bone marrow, a well-organized tissue located within the bone cavities, is richly innervated and highly vascularized but devoid of lymphatics. Structurally, it consists of two major cellular elements, the stromal cells (reticular cells--fibroblasts, endothelial cells, adipocytes, and so on) and the parenchymal cells (hematopoietic cells). Functionally, it… (More)