MICROANATOMY

Detailed explanation-1: -Epithelium, endothelium and mesothelium are three types of epithelial cell layers that line your internal organs, body cavities and form the outer layer of your skin. Epithelium generally lines pathways that are open to the external environment, such as your respiratory tract and digestive system.

Detailed explanation-2: -The stratified epithelium protects the body from physical and chemical damage by creating a barrier of keratinized cells. Goblet cells are involved in maintaining a protective layer of surface tissue, like the inner lining of the stomach, through secretions such as mucus and other substances that provide a barrier.

Detailed explanation-3: -Epidermis is an epithelium covering the external surface of the body. It provides protection against pathogens or mechanical damages, prevent water loose, and perform many other functions. Pleura is a type of covering epithelium known as mesothelium. It coats the serous cavities of the body and internal organs.