Granulation Arachnoid (Arachnoid Villus)

Arachnoid granulation (Arachnoid Villus): functions and features

The Arachnoid Villus is a structure that plays an important role in the regulation of cerebrospinal fluid (CSF) in the human body. This structure is a process of the arachnoid membrane, which penetrates the lumen of the dural sinus. It functions as a one-way valve that allows cerebrospinal fluid to flow from the subarachnoid space into the sinus venous blood.

Arachnoid granulation is located in the area of ​​the superior sagittal sinus and can be detected during magnetic resonance imaging of the brain. Large granulations, called arachnoid granulations or Pacchionian bodies, can be so greatly distended that they cause an indentation in the adjacent bone.

One of the main functions of Arachnoid granulation is the process of regulating pressure inside the cranial cavity, which is achieved by controlling the volume and flow rate of cerebrospinal fluid. In addition, Arachnoid granulation is involved in the process of purifying cerebrospinal fluid from various metabolic products and toxins.

However, the presence of Arachnoid granulation does not always mean that the process of regulation of cerebrospinal fluid occurs correctly. In some cases, the drainage function of the Arachnoid granulation may be impaired, which can lead to the development of hydrocephalus (swelling of the brain) or other diseases associated with impaired blood circulation in the brain.

Thus, the Arachnoid granulation is an important structure that plays a key role in the regulation of cerebrospinal fluid. It allows you to maintain optimal pressure inside the cranial cavity and is involved in the process of cleaning the cerebrospinal fluid from various metabolic products and toxins. However, if the drainage function of the Arachnoid granulation is disrupted, various diseases associated with impaired blood circulation in the brain may develop.

Arachnoid granulation (arachnoid villi) is a process of the arachnoid membrane (arachnoid), which penetrates the lumen of the sinus (sinus) of the dura mater (meninge). It acts as a one-way valve for cerebrospinal fluid (liquor cerebrospinalis) to be transferred from the subdural space into the venous blood (sanguis venosus).

Large granulations, called arachnoid granulations or pachyonic bodies, are found in the superior sagittal sinus (sinus sagittalis superior). They can stretch so much that they cause an impression in the adjacent bone.

Arachnoid membrane granulations play an important role in regulating the flow of cerebrospinal fluid and venous blood. They may also be involved in the formation of tumors such as pachyonic bodies, which can cause headaches and other symptoms.

Thus, arachnoid granulation is an important anatomical formation that plays an important role in the functioning of the nervous system and may be involved in various diseases.

Arachnoid granulation (Arachnoid villus) is a process of the arachnoid membrane that penetrates the lumen of the dural sinus and acts as a one-way valve allowing cerebrospinal fluid to pass from the subarachnoid space into the intracranial veins and lymphatic vessels. Large granulations, also known as arachnoid granulations or pachyonic bodies, can form in the area of ​​the superior sagittal sinus and cause depressions in the bone adjacent to them. These granulations can cause headaches, discomfort and other symptoms associated with poor circulation and metabolism in the brain. Various methods are used to treat arachnoid granulations, including surgery, drug therapy and physical therapy. However, the best way to prevent the formation of granulations is prevention and regular monitoring by a doctor.