Compartmentalization
Compartmentalization is an important process that occurs within the marrow of bones. Blood vessels play a crucial role in this process, acting as a barrier to prevent immature blood cells from leaving the marrow. This mechanism ensures that only mature blood cells enter the bloodstream.
Membrane proteins found on blood cells are responsible for attaching to the inner walls of blood vessels, allowing them to access the bloodstream. However, these proteins are exclusively present on mature blood cells.
Compartmentalization also involves the grouping of specific types of cells in particular areas of the marrow. For example, macrophages, a type of white blood cell, and red blood cells tend to move towards the blood vessels. On the other hand, granulocytes, another type of white blood cell, cluster around the borders of these areas.
Common Disorders Affecting Bone Marrow
Disorders related to bone marrow often stem from issues in the development of stem cells. One such disorder is aplastic anemia, which occurs when the red marrow fails to produce an adequate number of red blood cells. Another type of disorder is myeloproliferative disorders, which involve the excessive production of white blood cells. Inherited bone marrow failure syndromes (IBMFS) are rare genetic blood disorders that are characterized by an inability of the bone marrow to produce an optimal amount of blood cells.
Individuals with marrow disorders commonly experience symptoms such as joint and bone pain, swelling of internal organs, and feelings of fatigue or generalized weakness.