has part has part has_part characteristic of has modifier abnormal inner ear morphology abnormal vestibular aqueduct morphology abnormal Cotunnius canal morphology MPheno.ontology MP:0009821 abnormal aqueduct of Cotunnius morphology any structural anomaly in the small bony canal that surrounds the endolymphatic duct canal and links the vestibule of the inner ear to the posterior part of the internal surface of the petrous temporal bone abnormal posterior cranial fossa morphology quality abnormal vestibular aqueduct