How many layers does the skin consist of?

The skin consists of three primary layers: the epidermis, the dermis, and the hypodermis (also known as the subcutaneous layer).

The epidermis is the outermost layer, providing a protective barrier and playing a crucial role in the skin's function, including the prevention of water loss and barrier against environmental pathogens. Beneath the epidermis lies the dermis, which contains connective tissue, hair follicles, blood vessels, and nerve endings. This layer is essential for providing structural support and nourishment to the epidermis. Finally, the hypodermis attaches the skin to underlying tissues and structures, such as muscles and bones, and helps to insulate the body and absorb shocks.

Understanding these layers is fundamental in veterinary pharmacology, as various conditions and treatments often involve different layers of the skin.