Cartilage is found at the ends of bones and where joints meet ... Synovial joints have synovial fluid in the joint cavity that lubricates or 'oils' the joint so it moves smoothly.

Cartilage is found at the ends of bones and where joints meet ... Synovial joints have synovial fluid in the joint cavity that lubricates or 'oils' the joint so it moves smoothly.

Medullary bone is a special tissue that forms inside the bone cavities of modern birds, like chickens. The tissue is formed when a female is laying eggs and it acts as a calcium reservoir to form ...