Table of Contents
ARACHNOID GRANULATIONS:
Arachnoid granulations are small, rounded protrusions of the arachnoid membrane, located in the superior sagittal sinus. They are part of the arachnoid villi, which are projections of the arachnoid membrane that protrude into the dural venous sinuses.
1. What is an arachnoid granulation?
Answer: An arachnoid granulation is a small, rounded protrusion of the arachnoid membrane, located in the superior sagittal sinus.
2. What is an arachnoid villus?
Answer: An arachnoid villus is a projection of the arachnoid membrane that protrudes into the dural venous sinuses.
3. Where is an arachnoid granulation located?
Answer: An arachnoid granulation is located in the superior sagittal sinus.
4. How is an arachnoid granulation formed?
Answer: Arachnoid granulations are formed when the arachnoid membrane protrudes into the dural venous sinuses.
5. What is the function of an arachnoid granulation?
Answer: Arachnoid granulations are believed to act as a one-way valve, allowing cerebrospinal fluid to enter the superior sagittal sinus and be transported to the systemic circulation.
6. How is cerebrospinal fluid transported by arachnoid granulations?
Answer: Arachnoid granulations act as a one-way valve, allowing cerebrospinal fluid to enter the superior sagittal sinus and be transported to the systemic circulation.
7. Can arachnoid granulations be seen on imaging?
Answer: Yes, arachnoid granulations can be seen on imaging.
8. What is the anatomy of an arachnoid granulation?
Answer: An arachnoid granulation is a small, rounded protrusion of the arachnoid membrane, located in the superior sagittal sinus.
9. What is the relationship between arachnoid granulations and the arachnoid villi?
Answer: Arachnoid granulations are part of the arachnoid villi, which are projections of the arachnoid membrane that protrude into the dural venous sinuses.
10. What is the medical significance of arachnoid granulations?
Answer: Arachnoid granulations are believed to play a role in the absorption of cerebrospinal fluid, allowing it to be transported to the systemic circulation. They may also be associated with a number of medical conditions, such as hydrocephalus and meningitis.