External opening of vestibular aqueduct
Apertura externa aqueductus [aquae-] vestibuli
- Latin synonym: Apertura canaliculi vestibuli
- Synonym: Opening of vestibular canaliculus
Definition
The opening of vestibular aqueduct, is located onto the posterior surface of the petrous part of the temporal bone, into the posterior cranial fossa.
It transmits a small vein, and contains a tubular prolongation of the membranous labyrinth, the ductus endolymphaticus, which ends in a cul-de-sac, the endolymphatic sac, between the layers of the dura mater within the cranial cavity.
References
Text by Antoine Micheau, MD - Copyright IMAIOS
