PATHOLOGY

Detailed explanation-1: -The dermis has a rich blood supply while the epidermis is totally devoid of blood vessels. The amount of blood supply is directly proportional to the ability of a cell to divide and remain vital.

Detailed explanation-2: -The epidermis itself is devoid of blood supply and derives its nutrition from the underlying dermis. The dermis is the underlying connective tissue framework that supports the epidermis.

Detailed explanation-3: -The epidermis does not contain blood vessels; instead, cells in the deepest layers are nourished by diffusion from blood capillaries that are present in the upper layers of the dermis. Diffusion provides nourishment and waste removal from the cells of the dermis, as well as for the cells of the epidermis.

Detailed explanation-4: -So, the correct answer is ‘epidermis’.