When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.
This picture shows the general anatomy of a long bone. It is composed of an outer shell called dense bone (cortical bone). Inside is the marrow cavity or medullary cavity which houses the bone marrow. At the ends of the bone the space has spongy bone as well as some in the shaft. The diaphysis provides leverage while the epiphysis is enlarged to add strength to the joint. The joint surface has articular cartilage which allows for joint movement.
