Saturday, January 9, 2010
The reticulated stays in the bone marrow for about 3 days, and is then released into the bloodstream. Within 24 hours it’s fully mature and takes on the appearance of a normal red blood cell. A mature red blood cell has a life span of about 120 days. As it ages, it becomes less capable of carrying oxygen to cells: ultimately it is destroyed by specialized white cells in the bone marrow and spleen. In a healthy adult, approximately 250 billion red cells are destroyed and produced daily. That’s about 2 million every second and only about I percent of all the red cells normally in the health body! Some of the red cell components are recycled for use in new red cell production most of the iron (the home part of hemoglobin) is returned to the bone marrow, where it becomes part of the newly produced erythroblasts and some of the red cell’s protein (the globing part of hemoglobin) is recycled back into the plasma. The rest of the red cell is removed from the system by the liver or kidneys, and excreted from the health body.
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