human_reference_atlas has part connected to blood vessel endothelial cell Homo sapiens internal jugular vein inferior petrosal sinus inferior petrosal sinus Wikipedia:Inferior_petrosal_sinus uberon sinus petrosal inferior AS SCTID:279263009 EMAPA:19234 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. inferior petrosal sinus FMA:50770 UBERON:0007160 paired venous dural sinus