Angiogram demonstrating persistent<unk> , as indicated by the black arrow. The<unk>  is an artery that supplies the basilar artery with blood during human embryonic development. Normally, the<unk>  involutes after the formation of the posterior communicating artery. However, in some cases, the artery persists into adulthood and can cause medical complications, including intracranial aneurysms.
Trigeminal artery
Pontine arteries
Ophthalmic artery
Internal carotid artery
Inferior sagittal sinus
Superior sagittal sinus
Central retinal artery
Auriculotemporal nerve