Superior sagittal sinus
Superior Sagittal Sinus
The Superior Sagittal Sinus (pronunciation: su·pe·ri·or sa·git·tal si·nus) is a significant dural venous sinus located in the human brain.
Etymology
The term "Superior Sagittal Sinus" is derived from Latin. "Superior" means upper, "sagittal" refers to the sagittal plane that divides the body into left and right halves, and "sinus" in this context refers to a channel for venous blood.
Anatomy
The Superior Sagittal Sinus is an unpaired area of the dural venous sinuses, which drain blood from the brain towards the heart. It runs along the attached margin of the falx cerebri, a sickle-shaped fold of the dura mater in the brain. The sinus receives blood from the superficial cerebral veins and drains into the confluence of sinuses, also known as the torcular Herophili.
Function
The primary function of the Superior Sagittal Sinus is to drain the deoxygenated blood from the brain's superficial veins into the transverse sinuses. It also facilitates the circulation of the cerebrospinal fluid.
Related Terms
- Dural venous sinuses: Channels that drain deoxygenated blood from the brain.
- Falx cerebri: A sickle-shaped fold of the dura mater in the brain.
- Superficial cerebral veins: Veins that drain blood from the brain's surface.
- Confluence of sinuses: The meeting point of the superior sagittal sinus, straight sinus, and transverse sinuses.
- Transverse sinuses: Two major venous channels that receive blood from the superior sagittal sinus.
- Cerebrospinal fluid: The fluid that circulates in the brain and spinal cord.
External links
- Medical encyclopedia article on Superior sagittal sinus
- Wikipedia's article - Superior sagittal sinus
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