inferior petrosal sinus

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 bulb through 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

• inferior petrosal venous sampling

Siehe auch:

• Pons
• Cerebellum
• Sinus durae matris
• Medulla oblongata
• Sinus cavernosus
• superior petrosal sinus
• Canalis nervi hypoglossi
• inferior petrosal sinus sampling
• Foramen jugulare

und weiter:

• jugular foramen
• Nervus abducens
• internal jugular vein branches (mnemonic)