what epithelium protects
EPITHELIUM â¢ epithelium is a tissue composed of a layer of cells.â¢ Epithelium lines both the outside (skin) and the inside cavities and lumen of bodies.â¢ The outermost layer of our skin is composed of dead stratified squamous epithelial cells, as are the mucous membranes lining the inside of mouths and body cavities.unctions of Epithelial Tissue â¢ Protection â¢Epithelial cells from the skin protect underlying tissue from mechanical injury, harmful chemicals, invading bacteria and from excessive loss of water. â¢ Sensation â¢Sensory stimuli penetrate specialised epithelial cells.