Medulla oblongata is supplied by the following aeries, EXCEPT:

Blood supply to medulla oblongata is provided by veebral aery and its branches such as anterior spinal aery, posterior spinal aery and posterior inferior cerebellar aery. Anterior spinal aery supplies anterior and medial aspect of medulla oblongata. Posterior spinal aery supplies lateral aspect of medulla. PICA runs between the rootlets of glossopharyngeal, vagus and hypoglossal nerves where it supplies the nerves and pa of medulla.Ref: Functional Neuroanatomy: Text and Atlas By Adel K. Afifi, Ronald Arly Bergman (2005), Chapter 5, 2nd Edition, USA, Page 94