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Sulcus for sigmoid sinus of ...
Other Terms: Sillon du sinus sigmoïde
This is the groove that houses the sigmoid dural venous sinus. There are right and left grooves that arise from the posterolateral edge of the internal surface of the condylar portion of the bone. From here they curve anteriorly to the jugular notch. They carry the sigmoid sinus to the internal jugular vein. If a condylar canal is present, it opens into the floor of this groove.
Sulcus is Latin for groove or a long, shallow, open channel in the bone. Sigmoid means shaped like the letter "S." It comes from the Greek letter "S" or sigma. Sinus is Latin for a curve, fold, bay, or gulf. In anatomy it can describe anything from a large, hollow cavity to a concave groove-like channel.
Sillon du sinus sigmoïde