According to Encyclopædia Britannica, a mature bone cell is called an osteocyte. These cells, which are found in fully formed bone, develop from the bone-forming cells known as osteoblasts. More »

Different types of bone cells can create, maintain and dissolve bones. There are two main categories of bone cells: forming cells and resorbing cells. More »

The outer layer of the bone is called the periosteum. This membrane layer of the bone is dense and made up of fibrous tissue. It also consists of nerves and blood vessels that provide blood flow to the bone. More »

Compact bones have many layers that contain soft materials, such as tissues and cells, and hard outer shells. Compact bones are found in all parts of the body, including the limbs, spinal cord and skull. These bones are ... More » Science Human Anatomy Bones

Red bone marrow has more blood cells than yellow bone marrow, including red blood cells and platelets. Yellow marrow also has some white blood cells, but its color is due mostly to its having more fat cells. It can also ... More »

Bone is made mostly of collagen and calcium. This combination works to make the bones strong and flexible at the same time, enabling them to be protective and rebound from stress fractures. More »

Cortical bone is a dense and rigid layer of calcium-rich osseous tissue that makes up the outer layer of a bone, explains InnerBody. This compact bone layer is cylindrical in shape with a honeycombed structure, providing... More »