Anterior inferior cerebellar a. (AICA) Internal auditory a. Anterior vestibular a. SSC HSC Common cochlear a. Superior portion of saccule and utricle Main cochlear a. Cochlear vestibular a. All of cochlea except 1/3rd of basal turn Posterior vestibular a. PSC Inferior portion of saccule and utricle Cochlear ramus 1/3rd of basal turn of cochlea