Eustachian tube anatomy and physiology.
D000328:Adult; D000367:Age Factors; D000399:Air Pressure; D002648:Child; D003679:Deglutition; D004432:Ear, Middle / Q000502:physiology; D005064:Eustachian Tube / Q000033:anatomy & histology / Q000502:physiology; D006801:Humans; D007231:Infant, Newborn; D008221:Lymphoid Tissue / Q000033:anatomy & histology; D009132:Muscles / Q000502:physiology