Anterior inferior cerebellar artery

  • The anterior inferior cerebellar artery (also AICA, latin: arteria cerebellaris anterior inferior) is a branch of the basilar artery that mainly supplies blood to the cerebellum.

    The anterior inferior cerebellar artery arises at the level of the junction between the medulla oblongata and pons, then it passes posterolaterally, proceeds to the internal acoustic meatus and then arches along the undersurface of the cerebellum.

    On its course the AICA gives rise to two side branches:

    • labyrinthine artery,
    • subarcuate artery.

    The anterior inferior cerebellar artery with its branches supplies blood to the anterior inferior surface of cerebellum, the flocculus, the middle cerebellar peduncle, the inferior portion of the pons, and the inner ear.