Final answer:
Non-keratinized stratified squamous epithelium is found in moist linings such as the mouth, oesophagus, and part of the rectum, providing a protective layer without keratin, to remain pliable and moist.
Step-by-step explanation:
The subject of the question is non-keratinized stratified squamous epithelium, a type of tissue found in human body that functions to protect against physical and chemical wear and tear. This specific epithelial tissue is characterized by multiple layers of cells with the apical layer being flat, squamous cells which are not filled with the protein keratin.
The non-keratinized stratified squamous epithelium is found in places such as the mucous membranes lining the inside of the mouth, the oesophagus, and part of the rectum. These areas require a protective layer but also must remain moist, hence, keratin, which confers water-resistance, is not present.