ANATOMY

Detailed explanation-1: -The epithelium is a type of body tissue that forms the covering on all internal and external surfaces of your body, lines body cavities and hollow organs and is the major tissue in glands.

Detailed explanation-2: -Epithelial tissue or epithelium forms the outer covering of the skin and also lines the body cavity. It forms the lining of respiratory, digestive, reproductive and excretory tracts.

Detailed explanation-3: -Epithelial tissues are present as the outer covering of the skin and epithelium also lines the body cavities such as respiratory tract, digestive tract, etc.

Detailed explanation-4: -Types and Functions of Epithelial tissues. They are thin tissue that covers all the exposed surfaces of the body. They cover various surfaces of body parts like the inner lining of the mouth, digestive tract, secretory glands, lining of hollow parts of every organ such as heart, lungs, eyes, the urogenital tract, etc.

Detailed explanation-5: -The four major classes of simple epithelium are: 1) simple squamous; 2) simple cuboidal; 3) simple columnar; and 4) pseudostratified.