![Posterior semicircular duct - Cranial nerves - Vestibulocochlear nerve [VIII] - e-Anatomy](https://cdn.imaios.cn/i/imaios-images/web/images/eanatomy/modules/nerfs-craniens-anatomie/images/v2/93901691f14cbf182f691bab5d0e6f7bd8647ab2352007f7a1eceabf5c59dce3?ar=640:670&auto=format,compress&bg=FFFFFF&fit=crop&p64=NDA2LDg1Ng&t=UG9zdGVyaW9yIHNlbWljaXJjdWxhciBkdWN0&tx=406&ty=856&w=350&wk=1&s=4328984f1a40cab07b6b17559a65a3d4)
Posterior semicircular duct
Ductus semicircularis posterior
Definition
The posterior semicircular duct is vertical and directed backward, nearly parallel to the posterior surface of the petrous bone.
References
Text by Antoine Micheau, MD - Copyright IMAIOS
![Posterior semicircular duct - Cranial nerves - Vestibulocochlear nerve [VIII] - e-Anatomy](https://cdn.imaios.cn/i/imaios-images/web/images/eanatomy/modules/nerfs-craniens-anatomie/images/v2/93901691f14cbf182f691bab5d0e6f7bd8647ab2352007f7a1eceabf5c59dce3?ar=640:670&auto=format,compress&bg=FFFFFF&fit=crop&p64=NDA2LDg1Ng&t=UG9zdGVyaW9yIHNlbWljaXJjdWxhciBkdWN0&tx=406&ty=856&w=200&wk=1&s=ddb0e539f9ec73d1f762ed374cb612ec "Posterior semicircular duct - Cranial nerves - Vestibulocochlear nerve [VIII] - e-Anatomy")
