GENERAL HISTOLOGY

Detailed explanation-1: -The osteon consists of a central canal called the osteonic (haversian) canal, which is surrounded by concentric rings (lamellae) of matrix. Between the rings of matrix, the bone cells (osteocytes) are located in spaces called lacunae.

Detailed explanation-2: -To wrap it all up, osteons are structural and functional units of compact bone. Every osteon is made up of a central canal (which contains nerves and blood vessels), perforating canals, lamellae (configurations of bone matrix), and osteocyte-containing lacunae (holes).

Detailed explanation-3: -The osteon, often termed the primary structural unit of cortical bone, is a cylindrical structure in which a central canal containing blood vessels is surrounded by 20 to 30 concentric lamellae (Jee, 2001).

Detailed explanation-4: -Answer and Explanation: A) Osteons are the structural unit of compact bone. Osteons contain the bone matrix, and specialized cells of bone such as osteocytes.