NEET PG DENTAL EXAM

Detailed explanation-1: -The basal layer is the innermost layer of the epidermis, and contains small round cells called basal cells. The basal cells continually divide, and new cells constantly push older ones up toward the surface of the skin, where they are eventually shed.

Detailed explanation-2: -The epidermis has no blood supply and depends on diffusion from the dermal cells for its metabolic needs. The dead-cell layer of the stratum corneum provides the protection from water loss that allows vertebrates to dwell on land.

Detailed explanation-3: -Stratum basale, also known as stratum germinativum, is the deepest layer, separated from the dermis by the basement membrane (basal lamina) and attached to the basement membrane by hemidesmosomes.

Detailed explanation-4: -Stratum Spinosum-The cells in this layer (mostly keartinocytes) are living and they have bundles of tonofilaments (part of the cytoskeleton) that give them strength.