Anatomy & Organs

Sinus sagittalis superior – structure, function & diseases

Superior sagittal sinus

The superior sagittal sinus is a blood vessel in the human brain . It is an important blood conductor in the supply of the brain. Venous blood flows in it .

What is the superior sagittal sinus?

There are different blood vessels for an adequate blood supply in the human brain . They are components of the central nervous system . They include cerebral arteries, the sinus durae matris and several superficial and deep veins .

Venous blood flows into the dural sinuses and the various veins. The most important sinus durae matris are the superior sagittal sinus, the inferior sagittal sinus, the transverse sinus, the sigmoid sinus, and the cavernous sinus. All together they cover the entire area below the base of the skull and between the hemispheres. The superior sagittal sinus is the largest blood conductor in the human brain. It is located in the front to middle area below the skullcap.

Various veins flow from it and carry the blood to the upper layers of the brain tissue. It is the superficial veins that are called Venae superiores cerebri. In them, a rapid transport of various messengers and other substances takes place. Within a few seconds or minutes, nutrients can reach a site of action via the superior sagittal sinus. Cerebral fluid can be transported away just as quickly via it.

Anatomy & Structure

Under the skullcap is the dura mater. This is called the dura mater. It forms duplications and thus creates cavities in the tissue through which various venous blood vessels run.

The blood vessels are called the sinus durae matris or dural sinus. They contain all the blood from the brain area, the eye sockets and the meninges . The blood vessels transport almost all of the blood to the intera jugular vein. This is located in the jugular foramen of the posterior cranial fossa. The superior sagittal sinus is the largest blood conductor. It runs along the upper edge of the crescent of the brain. It is called the falx cerebri . The sinus sagitalles inferiores is to be delimited from it. This is located at the bottom of the brain sickle.

Several superficial veins branch off from the superior sagittal sinus. They are called the venae cerebri. Their task is to ensure the blood supply in the superficial area of ​​the brain tissue. They include the temporal, frontal, central, parietal, and occipital veins. The superior sagittal sinus then merges into the transverse sinus, which then becomes the sigmoid sinus.

Function & Tasks

The superior sagittal sinus supplies the brain tissue in the front and middle area of ​​the brain. It supplies the meninges and the surrounding tissue. In addition, it provides the blood for all superficial cerebral veins in the frontal area. Vital messenger substances are transported via the blood . The various blood vessels have the function of passing on the different active ingredients in their blood vessels within a short period of time.

The transport substances include cells, oxygen, blood plasma or hormones . They activate and regulate the individual functions of the organs. In addition, the so-called cerebrospinal fluid is transported away via the superior sagittal sinus. This is cerebrospinal fluid that forms in the brain’s ventricles, or inner spaces of brain tissue. In addition, the blood vessels in the human organism have the task of regulating heat within the body. The superior sagittal sinus ensures that the frontal areas of the brain maintain the correct temperature in order to be able to carry out their activities to a sufficient extent. Venous blood flows in the superior sagittal sinus.

All venous blood vessels in the body are characterized by the fact that their vessel walls are thinner than those of arteries . For this reason, they are often used for the supply of messenger substances, as well as for taking blood. During an operation, the superior sagittal sinus is used by the surgeon for this purpose, so that changes can be checked quickly. In addition, due to its size, it is a blood vessel that allows quick access and is therefore popular.

Diseases

If the superior sagittal sinus is damaged as a result of accidents, falls or during surgical procedures, it is important to act quickly. As the largest blood conductor in the human brain, a lot of blood flows through it. Bleeding, which is difficult to stop, can therefore quickly occur in the event of lesions in the vessel wall.

Disorders of consciousness or loss of consciousness are the consequences. If there are outflow disorders in the area of ​​​​the blood vessel, blood clots can be the trigger. They block the superior sagittal sinus and cause blood stasis. Sinus thrombosis is likely to develop. Headaches , epileptic seizures or delayed psychomotor function are then diagnosed. This leads to brain swelling and, in severe cases, to loss of the affected areas of the brain.

thrombosis in the brain is considered particularly dangerous because it can trigger strokes . These in turn can trigger a life-threatening condition in addition to lifelong symptoms. This takes place in affected patients within a very short time. The superior sagittal sinus is particularly susceptible to meningiomas. These are tumors that originate in the meninges. This condition is mainly diagnosed in adults. Since cancer cells from other tumor diseases are also transported via the blood vessels in the organism, it is also possible for further metastases to form in the brain.

Lisa Newlon
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Hello! I am Lisa Newlon, and I am a medical writer and researcher with over 10 years of experience in the healthcare industry. I have a Master’s degree in Medicine, and my deep understanding of medical terminology, practices, and procedures has made me a trusted source of information in the medical world.