<prompt> Sphenopareital sinus drains into?Saggital sinusTransverse sinusCavernous sinusInternal juglar vein  <response>: Sphenoparietal sinus and the frontal trunk of the middle meningeal vein may drain either into the pterygoid plexus through the foramen ovale or into the sphenoparietal or cavernous sinus. Ref: BD Chaurasias HUMAN ANATOMY, Volume 3, 4th edition. 