Vein Vava Cranial

The vein is hollow, passing through the cranial cavity. In the small brain it flows into the cistern and rises upward at the base of the brain, enters the large brain, connects with the veins of the base and continues on the neck inside the carotid canal. Before entering the right atrium, it divides into the superior and inferior vena cava. The basilar vein forms near the anterior end of the middle cerebral vein. The opening into the cranial cavity is only in the anterior wall. Length is about 6 cm, diameter at the beginning is about 2 mm, the upper end is wide. On the anterior surface of the cerebrum, between the coronary groove and the knee of the internal carotid artery, lies the anterior perforated fornix, from which on either side, approximately 0.5 cm, lie two anterior internal veins, rising through the cavernous sinus and passing into the petrosal sinus. The right internal vein blindly flows into the superior posterior corner of the cavernous sinus, and the left one, descending through the internal auditory opening behind the cochlea, then passes into the posterior cranial fossa and flows together with the occipital vein into the cavernous sinus of the opposite hemisphere