Stratified squamous epithelium is a type of tissue composed of multiple layers of cells, primarily designed to protect underlying tissues from abrasion, pathogens, and chemical exposure. The outermost layer consists of flat, scale-like cells, which can be keratinized (as in the skin) or non-keratinized (as in the lining of the mouth and esophagus). This structure allows for durability and resilience in areas subject to friction. This epithelial tissue is found in various locations throughout the body, including the skin, oral cavity, esophagus, and vagina. Its layered arrangement provides a barrier that helps maintain the integrity of organs and surfaces, making it essential for overall health and protection.