Figure 2: venous vascular territories (illustration), Figure 3: venous vascular territories of the medial cerebral cortex (illustration), posterior inferior cerebellar artery (PICA), anterior inferior cerebellar artery (AICA), persistent carotid-vertebrobasilar artery anastomoses, persistent proatlantal intersegmental artery, internal carotid artery venous plexus of Rektorzik. Das Tentorium cerebelli ist dorsal an der Protuberantia occipitalis interna aufgespannt, sowie auf beiden Seiten lateral am Sulcus sinus transversi und am rostralen Ende an der Margo superior partis petrosae befestigt. Tentorium cerebelli 7. These fistulas involve the “tentorial sinus” group of venous channels in … Base of Falx cerebri is attached to beak of tentorium cerebelli. The tentorium cerebelli is an extension of the meningeal dural sublayer that overlies the cerebellum and divides the cranial vault into supratentorial and infratentorial compartments [ 11]. The straight sinus is situated within the dura mater, where the falx cerebri meets the midline of tentorium cerebelli. Its inferior boundary is defined by the inferior sagittal sinus and straight sinus. Straight sinus Sinus Content of Tentorium Cerebelli 18. The tentorium cerebelli or cerebellar tentorium (Latin: "tent of the cerebellum") is an extension of the dura mater that separates the cerebellum from the inferior portion of the occipital lobes.. This is called herniation and will often cause an enlarged pupil on the affected side, due to pressure on the oculomotor nerve. When absent a persistent falcine sinus is usually identified, draining directly into the superior sagittal sinus. Straight sinus: Lies within the posterior end of the falx cerebri and in the middle of the tentorium cerebelli. In 26.7% of the cadavers the straight sinus was double, being either median in position, that is, one was superior and the other inferior (17.8%) or paramedian, that is, both lay side on either side of the midline at the junction of the falx cerebri with tentorium cerebelli (8.9%). N Surendrababu, Subathira, RS Livingstone "Variations in the cerebral venous anatomy and pitfalls in the diagnosis of cerebral venous sinus thrombosis: Low field MR experience" Indian J Med Sci. PMID: 1227669 [PubMed - indexed for MEDLINE] Publication Types: English Abstract; MeSH Terms. The straight sinus is situated within the dura mater, where the falx cerebri meets the midline of tentorium cerebelli. To the middle line of its upper surface the posterior border of the falx cerebri is attached, the straight sinus being placed at their line of junction. Its length is 50 mm on average [6,7]. Dentate nucleus 10. The straight sinus runs along the lines of the junction of the falx cerebri and the tentorium cerebelli. It can also drain into the transverse sinus. This attachment is more superior than its anterolateral and posterolateral attachments giving it a "tented" appearance 1. Das Tentorium cerebelli ist eine Duplikatur der Dura mater, die als quer aufgespanntes Duraseptum die mittlere von der hinteren Schädelgrube trennt. The tentorium cerebelli supports the occipital lobes above, and separates them from the cerebellum below. Its Its length in relation to the tent orial notch varied among differen t species [4,8] . The location of the tumor can help in determining the type of tumor, as different tumors occur with different frequencies at each location. At the external occipital protuberance it usually turns to the left to continue as the left transverse sinus. This sinus runs in the space formed by the attachment of the falx cerebri to the tentorium cerebelli. Also known as tentorial sinus or the sinus rectus, is an area within the skull beneath the brain that receives venous blood.The straight sinus receives blood from the superior cerebellar veins and inferior sagittal sinus and drains into the confluence of sinuses.. The location of the tumor can help in determining the type of tumor, as different tumors occur with different frequencies at each location. The tentorial apex is located at the junction of the vein of Galen and the straight sinus. Straight sinus - found within the tentorium cerebelli; Transverse sinuses - placed in the tentorium cerebelli; Sigmoid sinuses - found in the anterior portion of the tentorium cerebelli from which they drain into the jugular veins; Petrosquamous sinus - found along the junction of the petrous and squamous parts of the temporal bone This article incorporates text in the public domain from page 874 of the 20th edition of Gray's Anatomy (1918), A vertebrate brain structure separating the cerebellum from the occipital lobes, This article is about the vertebrate brain structure. It is attached, behind, by its convex border, to the transverse ridges upon the inner surface of the occipital bone, and there encloses the transverse sinuses; in front, to the superior angle of the petrous part of the temporal bone on either side, enclosing the superior petrosal sinuses. (2) The apex: is directed downwards till the foramen magnum. Present in more than half the cases, this sinus actually constitutes a true sinus, principally draining the superior and inferior hemispheric veins of the cerebellum, traversing the posterior section of the tentorium cerebelli and opening into the lateral or straight sinus.
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