Labyrinthine artery

A.Prof Frank Gaillard et al.

The labyrinthine artery, also known as the auditory artery or internal auditory artery, is a long and slender artery that is the main arterial supply to the vestibular apparatus and cochlea.

It usually originates from the AICA (~85%), although it can also branch from the basilar artery (~15%), vertebral artery (~5%) or even superior cerebellar artery.

From its origin, it accompanies the vestibulocochlear nerve and passes into the internal acoustic meatus where it divides into two branches:

  1. anterior vestibular artery
  2. common cochlear artery, which further divides into
    • proper cochlear artery
    • vestibulocochlear artery: gives of a vestibular ramus and a cochlear ramus
Anatomy: Brain
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Article information

rID: 1558
Tag: refs
Synonyms or Alternate Spellings:
  • Auditory artery
  • Internal auditory artery

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Cases and figures

  • Figure 1: circle of Willis anatomy
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  • FIgure 2: variant - basilar origin
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