Which type of cell forms the protective outer layer of the skin?

The epithelial cells form the protective outer layer of the skin, also called the epidermis. These cells are tightly packed and arranged in layers, providing a barrier against physical, chemical, and biological factors from the external environment. The primary function of the epidermis is to protect the underlying tissues and organs from damage, infection, and dehydration. In addition to their protective role, epithelial cells also regulate the exchange of substances between the body and the environment. Therefore, epithelial cells play a crucial role in maintaining the integrity and functionality of the skin and are the type of cell that forms the protective outer layer of the skin.