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The connecting point of the superior sagittal sinus, straight sinus, and occipital sinus.
It is found deep to the occipital protuberance of the skull.
Blood arriving at this area drains into the left and right transverse sinuses.
The superior sagittal sinus often drains into (either exclusively or predominantly) one transverse sinus, and the occipital sinus drains into the other.
Confluence of sinuses refers to the concavity in the bone which is the location of the confluence of sinuses.