What do bridging veins connect?

What do bridging veins connect?

The bridging vein or veins normally refer to veins which traverse the prepontine cistern to connect veins which run on the anterior aspect of the brainstem to the cavernous sinus or the clival venous plexus. They are easily identified on both contrast MRI and catheter angiography.

Where do bridging veins drain?

Bridging veins drain the venous blood from the cerebral cortex into the superior sagittal sinus (SSS) and doing so they bridge the subdural space.

Is superior cerebral vein a bridging vein?

Inferior cerebral veins are cortical bridging veins that primarily channel into the basal sinuses or the deep venous system. Important superficial veins include: • Superior cerebral veins: drain the superior surface; empty into the SSS.

How do the cerebral veins connect with the dural venous sinuses?

The inferior sagittal sinus lies within the inferior aspect of the falx cerebri and connects with the great cerebral vein forming the straight sinus. The straight sinus drains contents from inferior sagittal sinus and great cerebral vein and terminates into the confluence of sinuses.

What is a dural venous sinus?

Dural venous sinuses are a group of sinuses or blood channels that drains venous blood circulating from the cranial cavity. It collectively returns deoxygenated blood from the head to the heart to maintain systemic circulation.

Where is the dural venous sinus?

The dural venous sinuses are located between the endosteal and meningeal layers of the dura mater. They run in their own paths that are not parallel to arteries. The areas drained by the intracranial veins are different from the areas supplied by the major cerebral arteries.

What causes tearing of the bridging veins?

An ASDH commonly results from tearing of one or more bridging veins. This lesion also occurs from hemorrhagic contusions or intracerebral hematomas and from injury to a cortical artery or vein. Nontraumatic ASDHs can originate from a ruptured arteriovenous malformation or intracranial aneurysm.

What is the great vein of Galen?

The great cerebral vein is one of the large blood vessels in the skull draining the cerebrum of the brain. It is also known as the “vein of Galen”, named for its discoverer, the Greek physician Galen. However, it is not the only vein with this eponym.

What do dural venous sinuses do?

The dural venous sinuses (DVSs) are endothelial-lined sinuses, which lie between the two layers of dura (meningeal and endosteal layers). They collect venous blood from the brain, meninges, and calvaria and deliver it to the internal jugular veins at the skull base.

What is the function of the dural sinuses?

What is the purpose of dural venous sinuses? Dural venous sinuses are within the endothelium between the endosteal and the meningeal layer of the dura mater. They receive blood from the brain, the skull, the orbit, and the inner ear.

What do the dural venous sinuses drain?

The venous drainage of the brain does not follow the arteries of the brain. Instead, they drain to the dural sinuses, which subsequently drain to the internal jugular vein. Generally, the walls of these drainage pathways are formed by visceral periosteum and dural reflection, both lined with endothelium.