What is the petrosal vein?
What is the petrosal vein? The superior petrosal vein, also known as Dandy's vein is part of the venous drainage system in the posterior cranial fossa, draining the anterior aspect of the cerebellum and brainstem. What does the superior petrosal sinus do? The superior petrosal sinus drains many veins of the brain, including superior petrosal veins, some cerebellar veins, some inferior cerebral veins, and veins from the tympanic cavity. Where does the greater petrosal sinus drain? The superior petrosal sinus is one of the dural venous sinuses and drains the cavernous sinus. It courses posterolaterally to drain into the sigmoid...