Paramedian Arteries

Vessels dissected out: inferior view

Anterior cerebral artery (A2 segment)

Anterior communicating artery

Anterior cerebral artery (Ai segment)

Ophthalmic artery

Internal carotid artery

Distal medial striate artery (recurrent artery of Heubner)

Middle cerebral artery Posterior communicating artery

Anterior cerebral artery (A2 segment)

Anterior communicating artery

Anterior cerebral artery (Ai segment)

Distal medial striate artery (recurrent artery of Heubner)

Superior cerebellar artery Basilar artery Pontine arteries Anterior inferior cerebellar artery Vertebral artery

Anterior Cerebral Artery

Anterolateral central (lenticulostriate) arteries

Thalamotuberal (premammillary) artery

Posteromedial central (perforating) arteries

Posteromedial central (paramedian) arteries

Posterior cerebral artery (P2 segment) (Pi segment)

Superior cerebellar artery Basilar artery Pontine arteries Anterior inferior cerebellar artery Vertebral artery

Anteromedial central (perforating) arteries

Hypothalamic artery

Anterolateral central (lenticulostriate) arteries

Superior hypophyseal artery Inferior hypophyseal artery Anterior choroidal artery

Thalamotuberal (premammillary) artery

Posteromedial central (perforating) arteries

Thalamoperforating artery

Posteromedial central (paramedian) arteries

Labyrinthine (internal acoustic) artery

Vessels in situ: inferior view

Anterior cerebral artery Hypothalamic artery Internal carotid artery Superior hypophyseal artery Middle cerebral artery Inferior hypophyseal artery Posterior communicating artery

Efferent hypophyseal veins Posterior cerebral artery

Superior Hypophyseal Artery

Infundibulum (pituitary stalk) and long hypophyseal portal veins

Adenohypophysis (anterior lobe of pituitary gland)

Anterior communicating artery Optic chiasm Cavernous sinus

Infundibulum (pituitary stalk) and long hypophyseal portal veins

Adenohypophysis (anterior lobe of pituitary gland)

Neurohypophysis (posterior lobe of pituitary gland)

Posteromedial central (perforating) arteries

Superior cerebellar artery Basilar artery

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