Bone marow |
Bone marrow consists of two type of cells - the Hematopoietic stem cells, which produce the blood cells and the Stromal stem cells, which can produce the cartilage, fat and the bone. Hemopoiesis is the process in which the the blood cell is produced. There are two types of bone marrow, one is the red marrow which contains the hematopoietic stem cells. The red blood cells, platelets as well as most of the white blood cells arise in red bone marrow. The red marrow mainly exists in flat bones of an individual's body such as hip bone, skull, ribs, vertebrae and also in shoulder blades. Similarly the other type of bone marrow is the yellow marrow which houses the stroma stem cells.The presence of higher amount of fat cells give the yellow marrow it's colour. Some of the white blood cells are also developed in yellow marrow.
The formation of bone marrow in an individual takes place even before his birth. It's formation is similar to that of the formation of other organ's or tissue in one's body. Usually during birth the bone marrow is red which gets converted into yellow as one ages. Bone marrow is considered as an life saving agent for patients with severe blood loss, because the body has the tendency to convert the yellow marrow into red marrow in order to increase the blood cell production.
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