19 Superior vein of vermis. V. superior vermis. Arises from the superior portion of the vermis and empties into the great or internal cerebral vein. C
20 Inferior vein of vermis. V. inferior vermis. Arises from the lower half of the vermises and opens into the straight sinus. C
21 Superior veins of cerebellum. Vv. superiores cerebelli. Arise mostly from the lateral hemispheres and usually open into the transverse sinus. A
22 Inferior veins of cerebellum. Vv. inferiores cerebelli. They usually arise from the inferior, lateral hemispheres and empty into the adjacent sinuses. C
23 Precentral cerebellar vein. V. praecentralis cerebelli. It originates between the lingula and central lobule and drains into the great cerebral vein. C
24 Petrosal vein. V. petrosa. It arises in the region ofthe flocculus, can be quite large and empties into the inferior or superior petrosal sinus. C
25 Superior ophthalmic vein. V. ophthalmica superior. Begins medially above the eyeball with the nasofrontal vein and passes through the superior orbital fissure to the cavernous sinus. B
26 Nasofrontal vein. V. nasofrontalis. Connects superior ophthalmic vein and the union of the su-pratrochlear with the angular vein. B
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