What is the basic unit of structure for bones called?

The basic unit of structure for bones is called an osteon. Osteons, also known as Haversian systems, are cylindrical structures that comprise the compact bone, providing strength and support. Each osteon consists of concentric layers of bone tissue, called lamellae, which encircle a central canal containing blood vessels and nerves. This organization allows for efficient nutrient delivery and waste removal within the bone tissue.

While osteoblasts are cells responsible for bone formation, osteocytes are mature bone cells that maintain the bone matrix. Chondrocytes are specialized cells found in cartilage, not in bone. Understanding the role of osteons is essential for studying bone biology and the overall structure of the skeletal system.