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VENAE CEREBRI INTERNAE
Paired veins passing caudally around the midline in the telachoroidea of the third ventricle, formed by the union of the choroid vein, thalamostriate (terminal) vein, and vein of septum pellucidum, and uniting caudally so as to form the great cerebral vein.
Synonym: venae cerebri internae, veins of Galen.