NEET PG DENTAL EXAM

Detailed explanation-1: -Compact bone consists of closely packed osteons or haversian systems. 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: -The structural unit of bone tissue is called Haversian system. It consists of a central haversian canal containing blood vessels and nerves. It is surrounded by a matrix called ossein.

Detailed explanation-3: -The osteon is the functional unit of compact bone, and osteons contain lamellae, central canal, lacunae, and canaliculi.

Detailed explanation-4: -Osteons are cylindrical vascular tunnels formed by an osteoclast-rich tissue. They contain pluripotential precursor cells and endosteum known as the cutting cone. The bone removed by the cutting cone is replaced by osteoblast-rich tissue.