PATHOLOGY

Detailed explanation-1: -The upper portion of the dermis, the papillary dermis, contains plexi of blood vessels and nerves. These plexi provide nutrients to the epidermis via diffusion. The undulating surface between the epidermis and papillary dermis portends stability between the two layers.

Detailed explanation-2: -Answer and Explanation: The epidermis receives nutrients from the blood through diffusion or absorption. The dermis is the inner layer of skin that consists of loose connective tissues that contain blood vessels and are, therefore, highly vascularized.

Detailed explanation-3: -Only the deepest layer of the epidermis that is the Stratum basale receives the nourishment through diffusion from the blood capillaries present in the upper dermal layers.