Related Experiment Video
Updated: Aug 10, 2026

In Vivo Morphometric Analysis of Human Cranial Nerves Using Magnetic Resonance Imaging in Menière's Disease Ears and Normal Hearing Ears
Published on: February 21, 2018
Acousticofacial anastomoses in Meniere disorder
Abstract:
It is possible that acute labyrinthine hydrops characteristic of Meniere disorder is related to hyperparasympathetic tone analogous to that observe in rhinorrhea or nasal congestion. This new hypothesis is is supported by anatomical, clinical, and surgical arguments. Anatomically, the ear is supplied by a parasympathetic pathway from the acousticofacial anastomoses of Wrisberg intermediate nerve and the vestibular nerve. These anastomoses are of great importance and appear at a very early stage of embryonal development, much earlier than other parts of the parasympathetic component of the facial nerve. Surgically, vestibular neurectomy via the middle fossa route conserves the anatomy of the inner ear. Together with the vestibular nerve, the acousticofacial anastomoses are removed. This operation results in an improvement of hearing that is far from negligible.
Related Concept Videos
Anatomy of the Ear
Anastomoses
Anastomoses can be formed at arterial, venous, and lymphatic vessels.
Arterial Anastomosis: These occur between arteries. They are most common in...
Mitral Stenosis I: Introduction
Esophageal Achalasia
Cirrhosis I: Introduction

