Synonyms: mucous membrane of oral region oral part of face mucosa of organ organ mucosa of oral region mucous membrane of oral opening mucosa of oral opening mucosa of subdivision of mouth subdivision of mouth mucosa mucosa of organ of oral opening oral opening organ mucosa oral part of face mucous membrane organ mucosa of subdivision of mouth oral part of face mucosa mucous membrane of subdivision of mouth mucosa of organ of oral part of face oral part of face organ mucosa mucosa of organ of subdivision of mouth oral region mucosa oral opening mucous membrane mucous membrane of oral part of face mucosa of oral part of face organ mucosa of oral part of face subdivision of mouth mucous membrane oral region mucous membrane oral region mucosa of organ oral region organ mucosa oral opening mucosa organ mucosa of oral opening mucosa of organ of oral region subdivision of mouth organ mucosa subdivision of mouth mucosa of organ oral opening mucosa of organ