| 释义 |
petrosal sinus
noun
: any of four venous sinuses at the base of the brain:
a. : a small superior sinus on each side that connects the cavernous and lateral sinuses of the same side
b. : a larger inferior sinus on each side that extends from the end of the cavernous sinus into the jugular foramen and there joins the lateral sinus to form the corresponding jugular vein |