Sugar 101. Naturally occurring sugars and added sugars. There are two types of sugars in American diets: naturally occurring sugars and added sugars. Naturally occurring sugars are found naturally in foods such as fruit (fructose) and milk (lactose).
Epidermis, in zoology, protective outermost portion of the skin. There are two layers of epidermis, the living basal layer, which is next to the dermis, and the external stratum corneum, or horny layer, which is composed of dead, keratin-filled cells that have migrated outward from the basal layer. The melanocytes, responsible for skin colour, are found in the basal cells.
The skin consists of three main layers epidermis, dermis and subcutis. Each layer has its specific structure and functions. Epidermis. This layer is seen on the surface of the skin.It is made up of cells called keratinocytes, which are stacked on top of each other, forming different sub-layers.he dermis consists mostly of connective tissue and is much thicker than the epidermis. It is responsible for the skin's pliability and mechanical resistance and is also involved in the regulation of the body temperature.