part of part of develops from develops from develops from part of develops from part of pharyngotympanic tube epithelial tube endo-epithelium tubotympanic recess epithelium pharyngotympanic tube epithelium EHDAA2:0004117 auditory tube epithelium FMA:285217 EMAPA:32801 eustachian tube epithelium UBERON:0010062 MA:0003142 middle ear epithelium