The Anatomy of Long Bones

Long Bone Structure

• The region between the diaphysis and epiphysis is the metaphysis.
• The metaphysis is a transitional zone where the compact bone of the diaphysis merges with the spongy bone of the epiphysis.

Articular Cartilage

• Articular cartilage is a layer of smooth, hyaline cartilage that covers the ends of bones in a joint.
• The function of articular cartilage is to reduce friction between bones and to absorb shock, allowing for smooth movement and minimizing wear and tear on the bones.

Periosteum

• The periosteum is a double-layered membrane that covers the outer surface of a long bone.
• The purpose of the periosteum is to provide a site for muscle attachment, to protect the bone, and to aid in bone growth and repair.

Test your knowledge of the structure of long bones with this quiz! From the diaphysis to the epiphyses, learn about the different parts and functions of these essential skeletal elements.