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Great cerebral vein [[vein of Galen]]. V. magna cerebri [[Galeni]]. Short vein between the union of both internal cerebral veins and the beginning of the straight sinus. A C Internal cerebral veins [right and left]]. Vv. internae cerebri. Each runs in the transverse fissure, thus between the fornix and thalamus or the roof of the third ventricle. Both begin at the interventricular foramen and end at the site where both unite to form the great cerebral vein. AC

Superior choroid vein. V. choroidea superior. It extends the entire length of the choroid plexus up to the interventricular foramen and receives branches from the hippocampus, fornix and corpus callosum. A

Superior thalamostriate vein. V. thalamostri-ata superior (v. terminalis). It runs in the angle between the thalamus and caudate nucleus. It has no branches from the thalamus itself, but some from its vicinity. It ends by opening into the superior choroid vein in the interventricular foramen. A

Anterior vein of septum pellucidum. V. anterior septi pellucidi. From its drainage area, the medulla of the frontal lobe and the genu of the corpus callosum, it passes in the septum pel-lucidum to join the thalamostriate vein. A C Posterior vein of septum pellucidum. V. posterior septi pellucidi. It arises from the roof of the lateral ventricle and often opens into the internal cerebral vein. C

Medial atrial vein of lateral ventricle. V. medialis atrii ventriculi lateralis. Arises from the medulla ofthe parietal and occipital lobes and passes in the medial wall of the lateral ventricle in front of the junction of the posterior horn. A Lateral atrial vein of lateral ventricle. V. lateralis atrii ventriculi lateralis. Arises from the medulla ofthe parietal and occipital lobes and courses in the lateral wall of the lateral ventricle in front of the exit of the posterior horn. A Veins of caudate nucleus. Vv. nuclei caudati. A Lateral direct veins. Vv. directae laterales. Branchens from the wall of the lateral ventricle opening directly into the internal cerebral vein. A

Posterior vein of corpus callosum. V. posterior corporis callosi. Branch coming from the end of the corpus callosum from below. A C Dorsal vein of corpus callosum. V. dorsalis corporis callosi. Dorsal branch passing around the splenium. C

Veins of brain stem. Vv. trunci encephali. Anterior pontomesencephalic vein. V. pon-tomesencephalica anterior. A continuation of the vein of the medulla oblongata that extends as far as the interpeduncular fossa, often draining into the petrosal vein, and sometimes into the basal vein. C

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