Inferior petrosal sinus

Dr Owen Kang and A.Prof Frank Gaillard et al.

The inferior petrosal sinus is one of the dural venous sinuses. It is often a plexus of venous channels rather than a true sinus and drains blood from the cavernous sinus to the jugular foramen (pars nervosa) or sometimes via a vein which passes through the hypoglossal canal to the suboccipital venous plexus.

It runs in a shallow groove between the petrous temporal bone and basilar occipital bone (on either side of the clivus). It is connected across the midline by the basilar plexus.

Along with the cavernous sinus, it receives tributaries from the medulla oblongata, pons and inferior surface of the cerebellum as well as labyrinthine veins (via the cochlear canaliculus and the vestibular aqueduct).

See also

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Article information

rID: 5252
Section: Anatomy
Synonyms or Alternate Spellings:

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