Hematopoiesis:

Chapter: 20a
Synthesis of blood cells, including red blood cells, white blood cells, and platelets. The multipotential stem cell theory of hematopoiesis states that a pluripotent hemopoietic stem cell gives rise to committed myeloid and lymphoid stem cells, which can replicate and differentiate into mature leukocytes. The site of hematopoiesis in the adult is the medullary space of the pelvis, ribs, vertebrae, skull, sternum and proximal long bones.