Inferior petrosal sinus

Inferior petrosal sinus
Dural veins
The sinuses at the base of the skull. (Inferior petrosal sinus visible at center, between superior petrosal sinus and basilar plexus.)
Details
Source	cavernous sinus
Drains to	internal jugular vein
Identifiers
Latin	sinus petrosus inferior
MeSH	A07.231.908.224
TA	A12.3.05.113
FMA	50770
*Anatomical terminology* [edit on Wikidata]

The inferior petrosal sinuses are small sinuses situated on the inferior border of the petrous part of the temporal bone on each side.

Each inferior petrosal sinus drains the cavernous sinus into the internal jugular vein.

The inferior petrosal sinus is situated in the inferior petrosal sulcus, formed by the junction of the petrous part of the temporal bone with the basilar part of the occipital bone.

It begins in the postero-inferior part of the cavernous sinus and, passing through the anterior part of the jugular foramen, ends in the superior bulb of the internal jugular vein.

The inferior petrosal sinus receives the internal auditory veins and also veins from the medulla oblongata, pons, and under surface of the cerebellum.

Additional images

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

Retromandibular	maxillary pterygoid plexus superficial temporal anterior auricular

Direct	posterior auricular transverse cervical suprascapular anterior jugular jugular venous arch

Superficial:	superior superficial middle inferior inferior anastomotic (Labbé) superior anastomotic (Trolard)

Deep:	great internal basal deep middle superior thalamostriate

To COS	superior sagittal straight inferior sagittal occipital

To CS	sphenoparietal intercavernous superior ophthalmic ethmoidal central retinal nasofrontal vorticose veins inferior ophthalmic

To IJV	sigmoid: transverse petrosquamous superior petrosal inferior petrosal basilar plexus internal auditory veins condylar

Direct

Vertebral	occipital occipital emissary suboccipital venous plexus deep cervical

Direct	inferior thyroid inferior laryngeal thymic

This article is issued from Wikipedia - version of the 11/30/2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.