Bone Marrow- Types, Structure and Functions


Bone marrow is a soft and spongy tissue that fills the inner cavities of bones. It is the primary site of blood cell production and storage in the body. Bone marrow contains stem cells that can differentiate into various types of blood cells, such as red blood cells, white blood cells, and platelets. These blood cells perform vital functions such as carrying oxygen, fighting infections, and clotting wounds.

Bone marrow also plays a key role in the immune system, as it is the source of lymphocytes, which are specialized white blood cells that recognize and eliminate foreign invaders. Lymphocytes include B cells and T cells, which are responsible for antibody production and cell-mediated immunity, respectively.

Bone marrow is essential for life, as it maintains a constant supply of new blood cells to replace the old and damaged ones. Without bone marrow, the body would not be able to produce enough blood cells to sustain normal functions. Bone marrow disorders, such as leukemia, anemia, and aplastic anemia, can affect the quality and quantity of blood cells and impair the immune system.