Answer: Deoxygenated blood to the right atrium
Which dural sinuses drain directly into the highlighted structure?

The sinuses can be injured by trauma in which damage to the dura mater may result in blood clot formation (thrombosis) within the dural sinuses. Other common causes of dural sinus thrombosis include tracking of infection through the ophthalmic vein in orbital cellulitis. While rare dural sinus thrombosis may lead to hemorrhagic infarction or cerebral oedema with serious consequences including epilepsy neurological deficits or death.

Structure The sigmoid sinus is a dural venous sinus situated within the dura mater . The sigmoid sinus receives blood from the transverse sinuses which track the posterior wall of the cranial cavity travels inferiorly along the parietal bone temporal bone and occipital bone and converges with the inferior petrosal sinuses to form the internal jugular vein .

Superior sagittal sinus - Wikipedia

Dural venous sinuses - Wikipedia

Confluence of sinuses - Wikipedia

Dural venous sinuses - Wikipedia

The cavernous sinus drains by two larger channels the superior and inferior petrosal sinuses ultimately into the internal jugular vein via the sigmoid sinus also draining with emissary vein to pterygoid plexus. Clinical significance. It ...


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