Of the Sulcus sinus sigmoidei is a groove in the bone of the skull. It is located in the back of the skull. It is formed by the sigmoid sinus.
What is the sigmoid sinus?
The sigmoid sinus is a structure inside the human skull. A sulcus is a furrow in the bone structure. It is also known as the cerebral furrow or sulci cerebri. Sulci are located between individual turns of the brain.
They resemble a ditch and run like furrows through the cerebral cortex, the cerebral cortex. There are various sulci in the human skull. The sigmoid sinus is located in the back of the inner skull. There is a pit there, the posterior cranial fossa. The sigmoid sulcus is located in this. The sulcus sinus sigmoidei is formed by the sinus sigmoidei.
This is a venous blood stream near the occiput. It is S-shaped and supplies the brain with important messenger substances. The sigmoid sinus is responsible for both supply and removal of the cerebral blood. Many other veins arise from it. Together, they all supply the entire rear area of the skull with blood and ensure that the entire tissue in this brain region is thermally regulated.
Anatomy & structure
The sigmoid sulcus is a groove in the structure of the bone at the back of the skull. Compared to other sulci in the brain, it is remarkably wide. This groove is formed by a blood stream, the sigmoid sinus.
The sigmoid sulcus runs along the inner side of the occiput. This is called the occipital bone in anatomy. Then the sigmoid sulcus runs around the jugular process. This is a bony process on the occiput that forms the back of the jugular foramen. The jugular foramen is a small opening at the back of the skull that allows nerves and blood vessels to pass through. The sulcus sinus sigmoidei runs after the processus jugularis to the pars mastoidea of the temporal bone. The temporal bone is called the temporal bone. The middle and inner ear are located in it. In the area of the temporal bone, the sulcus sinus sigmoidei turns and runs to the parietal bone. This is called the parietal bone. The parietal bone forms the roof of the skull and part of the side wall.
Function & tasks
The skull with all its bones has the task of adequately protecting the brain and all other structures such as blood vessels or nerves in the head. It provides the stability to ensure that all stimuli are processed in the event of an impact or a fall.
Sulci have the task of separating different turns of the brain from one another. It is the furrows that run right through the various brain areas and delimit them. They give the tissue in the brain the characteristic structure of a wave-like shape. The sulci sinus sigmoidei is a broad furrow that is found in the bone of the skull. It is characterized by its striking width. Unlike the other sulci, it does not separate the tissue and different structures from one another. Since it is shaped like a cavity in the skull bone, it offers the tissue around it the opportunity to lie down in it. Therefore the sulci sinus sigmoidei has almost an embedding function of the tissue.
Dents and bumps are characteristic in the skull. There are different bumps in every skull. The skull is generally rounded on the outside, but inside it is provided with different bulges. Vessels, tissue or nerve fibers push themselves into the bulges. If there is swelling in the brain, they are used as a means of evasion for healthy tissue. Due to the very rigid structure of the skull, the tissue cannot escape. However, small cavities in some parts of the tissue and furrows offer little opportunities that are used by the brain structures.
Diseases
Different ailments can cause different complaints and lesions of the skull. Falls and accidents can damage the bone structure of the skull. Fractures of the skull often lead to pain in the visual field.
They can also cause headaches, internal bleeding, or leakage of brain water. Most of the pain in the skull is due to damage to the nerves. The complaints stretch to the neck, shoulders or arms. The musculature stiffens and movement problems arise. The scalp can hurt, which can lead to discomfort when touching or combing the hair. Neck pain often causes the head to be tilted.
Skull tumors can develop. These lead to discomfort and severe pain in the areas around the tumor. In many cases, it is surgically removed for relief. One disease of the bones is osteoporosis. Osteoporosis is also known as bone loss. It causes decreased bone density in the affected area. Osteoporosis is associated with pain extending to the neck and scalp. Depending on the severity, osteoporosis can lead to fractures of the skull. These can be triggered by strong vibratory movements or a light to medium blow to the head. In addition, physical processes such as sneezing or coughing can lead to a skull fracture in advanced disease.
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