Labyrinthine artery is a branch of artery:

Five branches of basilar artery 1. Pontine artery 2. Labyrinthine artery 3. Anterior inferior cerebellar artery 4. Superior cerebellar artery 5. Posterior cerebral artery “The membranous part is supplied by the labrynthine artery1,3 which either arises from Anterior inferior cerebellar (85-100% times)2 or is the direct branch of the basilar artery (<5% times)2” Ref: 1. Gray's Basic Anatomy by Richard Drake, A. Wayne Vogl, Adam W. Pg 493 2. Learning Human Anatomy: Laboratory Text and Workbook by Julia Guy. 3. Clinical Anatomy for Students: Problem Solving Approach by Neeta V. Kulkarn, Pg 387