The inferior petrosal sinus, within the human head, is an area beneath the brain, which allows blood veins to span the area, from the center of the head downward. It drains from the cavernous sinus (beneath the brain) to the sigmoid sinuses above the internal jugular vein. [ http://en.wikipedia.org/wiki/Inferior_petrosal_sinus ]

Synonyms: sinus petrosal inferior

This is just here as a test because I lose it