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The bones are multifunctional organs of the body that are a part of the endoskeleton. They are composed of cortical (compact) bone and cancellous (spongy) bone. Cortical bone is the outer hard covering, which gives bones the characteristic white color. Cancellous bone is the inner part of the bone, which is composed of a porous network in which the blood vessels and bone marrow are located. The bones have many essential functions. They act as a protective barrier for vital organs such as the brain and heart. They are required for structure and movement of the human body. The major function of the bone is hematopoiesis, which is the production of red blood cells (RBC) and white blood cells (WBC). Therefore, disorders of the bones ...

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