NEET BIOLOGY

Detailed explanation-1: -Although normal liver cell turnover occurs through mitotic division of both hepatocytes & non-parenchymal cells, there are nevertheless strong indications for the presence of hepatic stem cells, as manifested following persistent severe or potentially catastrophic injury.

Detailed explanation-2: -what 3 types of cells divide less frequently? nerve cells, brain cells, and skeletal muscle cells all stop dividing after birth.

Detailed explanation-3: -There are a few exceptions (e.g. liver cells or T-cells) but in general specialized cells can no longer divide. Skin cells, red blood cells or gut lining cells cannot undergo mitosis. Stem cells do divide by mitosis and this makes them very important for replacing lost or damaged specialized cells.

Detailed explanation-4: -The fastest type of cell division is amitosis. Amitosis is a term describing cell division without nuclear envelope breakdown and formation of well-visible mitotic spindle and condensed chromosomes. It is the direct cell division. It is also called as closed mitosis.