part of part of has developmental contribution from sense organ head ear AAO:0011014 BTO:0000368 Both vertebrate and invertebrate auditory organs are thought to have evolved from primitive mechanosensors, but the nature of the ancestral structure and the evolutionary trajectories followed in distinct animal lineages remain unknown. In particular, we do not know how many types of mechanosensor existed in the protostome-deuterostome ancestor from which insects and vertebrates evolved or whether the PDA had an auditory organ.[well established][VHOG] CALOHA:TS-1165 EFO:0000826 EHDAA2:0000423 EHDAA:502 EMAPA:16193 EV:0100353 FMA:52780 GAID:62 MA:0000236 MAT:0000138 MESH:D004423 MIAA:0000138 OpenCyc:Mx4rvViXS5wpEbGdrcN5Y29ycA OpenCyc:Mx4rvVjL05wpEbGdrcN5Y29ycA Sense organ in vertebrates that is specialized for the detection of sound, and the maintenance of balance. Includes the outer ear and middle ear, which collect and transmit sound waves; and the inner ear, which contains the organs of balance and (except in fish) hearing. Also includes the pinna, the visible part of the outer ear, present in some mammals. The organ of hearing and of equilibrium. [TFD][VHOG] UBERON:0001690 UMLS:C0013443 UMLS:C0521421 VHOG:0000330 XAO:0000189 auditory apparatus auricular auris galen:Ear uberon vestibulo-auditory system neural crest structure with developmental contribution from neural crest