And the inner ear structures include cochlear, triple semicircular canals, utricle, sacculus, sigmoid sinus, internal auditory meatus, endolymphatic sac, foramen of vestibular aqueduct, foramen of cochlear aqueduct, etc. 内耳结构:耳蜗、三个半规管、椭圆囊、球囊、乙状窦、内听道、内淋巴囊裂、前庭导水管口、蜗水管口等。