The external aperture of the human vestibular aqueduct.
D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010579:Petrous Bone / Q000033:anatomy & histology; D012737:Sex Factors; D013701:Temporal Bone / Q000033:anatomy & histology; D014723:Vestibular Aqueduct / Q000033:anatomy & histology*; D014722:Vestibule, Labyrinth / Q000033:anatomy & histology*