<prompt> The upper half of the esophagus in lined byStratified cuboidal epitheliumStratififed squamous epitheliumStratififed squamous non keratinsed epitheliumStratififed squamous keratinised epithelium  <response>: INDERBIR SINGHS TEXTBOOK OF HUMAN HISTOLOGY-PAGE NO:263 The mucosa The mucous membrane of the oesophagus shows several longitudinal folds that disappears when the tube is distended The mucosa is lined by stratified squamous epithelium which is normally not keratinized 