part of part of develops from develops from capable of part of capable of part of surrounded by surrounded by vibrational conductance of sound to the inner ear external acoustic meatus consider revisiting superclass after refinement of CARO/EAO, conduit may not be quite correct. UBERON:0001352 galen:ExternalAuditoryMeatus FMA:61734 GAID:864 auditory meatus A tube running from the outer ear to the middle ear. The human ear canal extends from the pinna to the eardrum and is about 26 mm in length and 7 mm in diameter. Wikipedia:External_acoustic_meatus EMAPA:17588 EHDAA2:0000460 external auditory tube MA:0000260 NCIT:C12498 VHOG:0000977 UMLS:C0013444 external auditory meatus external auditory canal MESH:D004424 ear canal external acoustic tube EV:0100356 SCTID:181178004 auditory canal EHDAA:8975 tympanic ring, which serves as support for the tympanic membrane, directs invagination of the first pharingeal cleft ectoderm to form the external acoustic meatus (EAM), which provides the outer layer of the membrane[PMID 11237469] subdivision of head in FMA. external ear anatomical conduit 1st arch pharyngeal cleft auditory meatus epithelium