Question

In exfoliative cytology, epithelial cells are removed and examined without any lasting damage to the tissue from which these cells are removed. why is there usually no lasting damage?

Answer 1

Because epithelial tissue is capable of regeneration.

The skin consists of two tissues: the outermost, the epidermis, resting on a vascularized connective tissue, the dermis. In the epidermis, which includes several layers of cells, the outer layer is formed of dead cells that are desquamating and are constantly being replaced by proliferating basal cell cells. So, under normal physiological conditions, the epidermis, like all the epithelia, is in constant renewal. On the other hand, when accidentally, the upper parts of the epidermis are damaged as a result, for example, of a burn or a slight abrasion, the destroyed portion is regenerated thanks to an accelerated proliferation of basal epidermal cells.

Answer 2

Answer;

Epithelial tissue is capable of regeneration.

Explanation;

-Exfoliative cytology is an important alternative to biopsy in certain situations. In exfoliative cytology, cells shed from body surfaces, such as the inside of the mouth, are collected and examined.

-This technique is useful only for the examination of surface cells and often requires additional cytological analysis to confirm the results. Epithelial cells are removed and examined without any lasting damage to the tissue from which these cells are removed because many epithelial tissues are capable of regeneration, that is, they are capable of rapidly replacing damaged and dead cells.