Articular cartilage and bone marrow

Articular cartilage and bone marrow.

Compact bone is found on the outer surface of long bones. The cells (osteocytes) which make up bone are very densely packed.

The ends of long bones are called the epiphysis, the shaft is called the diaphysis.

There is articular cartilage on either ends. The long bones distally and proximally have red marrow. Red bone marrow is a place where red blood cells are made. There is yellow marrow in the diaphysis. The yellow marrow is mostly fat and storage for needed energy.

On the surface of the bone is a periosteum which covers the endosteum. The center is called the medullary cavity.