petrosal sinus


in·fe·ri·or pe·tro·sal si·nus

[TA] a paired dural venous sinus running in the groove on the petrooccipital fissure connecting the cavernous sinus with the superior bulb of the internal jugular vein. Synonym(s): sinus petrosus inferior [TA]

petrosal sinus

The superior or the inferior petrosal sinus.See also: sinus