Arterial Supply to the Nerves of the Oculomotor System

• Posterior Intracranial Circulation
  • Thalamoperforating arteries via posterior cerebral artery, posterior communicating artery, superior cerebellar artery and basilar artery
  • Mesencephalic and diencephalic perforators via posterior cerebral artery
• Anterior Intracranial Circulation
  • inferolateral and meningohypophyseal trunk of the internal carotid artery
• Extracranial Circulation
  • Internal carotid artery and ophthalmic artery

• Vermian, paravermian (SCA)/collicular

artery (PCA)/inferolateral and meningohypophyseal trunk (ICA) ICA/posterior ethmoidal artery (ICA)/OA

• Anterolateral arteries, pontomedullary

artery, anterior inferior cerebellar artery (BA)/inferolateral and meningohypophyseal trunk (ICA) ICA/mOA

ICA, internal carotid artery; ECA, external carotid artery; ACA, anterior cerebral artery; MCA, middle cerebral artery; PCA, posterior cerebral artery; ACOMM, anterior communicating artery; PCOMM, posterior communicating artery; OA, ophthalmic artery; BA, basilar artery; SCA, superior cerebellar artery; VA, vertebral artery; CCA, common carotid artery.