Articles Cases Courses Quiz. About Recent Edits Go ad-free. Edit article. View revision history Report problem with Article. Citation, DOI and article data. Gaillard, F. Superior sagittal sinus. Reference article, Radiopaedia. Vascular , Central Nervous System.
URL of Article. Normal variants Anatomic variations of the superior sagittal sinus are frequent. This includes: variations in the anterior rostral superior sagittal sinus most frequent hypoplasia of the middle part of the superior sagittal sinus Four types of variations of the anterior rostral superior sagittal sinus may be identified: 3 classic anatomy with a fully developed rostral superior sagittal sinus duplication of the rostral superior sagittal sinus unilateral hypoplastic rostral superior sagittal sinus complete or bilateral hypoplastic rostral superior sagittal sinus: in those cases of complete hypoplastic rostral superior sagittal sinus, the absent portion is replaced by a pair of large parasagittal superior frontal cortical veins that run dorsally to join the origin of the superior sagittal sinus close to the coronal suture.
Quiz questions. Gray's Atlas of Anatomy. Churchill Livingstone. Read it at Google Books - Find it at Amazon 2. Close Privacy Overview This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website.
These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience. Necessary Necessary. Necessary cookies are absolutely essential for the website to function properly.
The falx cerebri is formed from the dura mater and connects drainage systems and other structures where the two sides of the brain meet. Here, the straight, superior, and inferior sagittal sinuses come together in an area called the confluence of sinuses, which drains into the left and right transverse sinuses, through the sigmoid sinus, and on to the internal jugular vein. Anatomical variations of any significance are rare when it comes to the superior sagittal sinus.
When variations do occur, they are generally in the size or location of the vessel:. The purpose of the superior sagittal sinus is to carry waste and fluids away from the brain as veins do throughout the rest of the body. It collects blood and other fluid from smaller vessels as it extends from the front to the back of the skull, and it eventually drains that blood and fluid into the internal jugular vein.
The internal jugular vein carries most of the blood away from the head, moving the deoxygenated blood back to the heart. From there, it is pumped into the lungs to be reoxygenated and returned to the brain and other parts of the body. The superior sagittal sinus also has a role in maintaining the balance of cerebrospinal fluid. Small valves that move cerebrospinal fluid into the dural sinuses are located in the walls of the superior sagittal sinus.
These valves help recirculate and move fluid, controlling the volume of cerebrospinal fluid in the brain. Too much or too little of this fluid can lead to significant neurological problems.
The duct system of the brain is complex, so when problems arise here, they can have a major impact on the entire body. Since blood and other fluids are carried through the superior sagittal sinus and other vessels in the dural venous sinus, blockages caused by clots or malformations can be deadly.
A number of conditions and issues that can affect the superior sagittal sinus include:. Sign up for our Health Tip of the Day newsletter, and receive daily tips that will help you live your healthiest life. Neuroanatomy, superior sagittal sinus. Updated January Meningiomas, Part I.
Handbook of Clinical Neurology. Vol Elsevier; Unilateral hypoplasia of the rostral end of the superior sagittal sinus. Neuroanatomy, Superior Sagittal Sinus. Updated Aug. Superior sagittal sinus dural arteriovenous fistulas treated by stent placement for an occluded sinus and transarterial embolization. A case report.
0コメント