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Intercavernous sinuses

Vein: Intercavernous sinuses

Dural veins

The sinuses at the base of the skull. (Visible as light blue circle at center.)
Latin	sini intercavernosi
Gray's	subject #171 659
MeSH	Cranial+Sinuses

The intercavernous sinuses are two in number, an anterior^[1] and a posterior,^[2] and connect the two cavernous sinuses across the middle line.

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The anterior passes in front of the hypophysis cerebri, the posterior behind it, and they form with the cavernous sinuses a venous circle (circular sinus) around the hypophysis.

The anterior one is usually the larger of the two, and one or other is occasionally absent.

References

^ s_12/12738815 at Dorland's Medical Dictionary
^ s_12/12738822 at Dorland's Medical Dictionary

v • d • e Veins of head and neck
head and face	common facial • facial (frontal, supraorbital, angular, superior labial, inferior labial, deep facial) • pterygoid plexus retromandibular (maxillary) • superficial temporal (anterior auricular) • posterior auricular occipital • suboccipital venous plexus
neck	internal jugular: lingual • pharyngeal • superior thyroid • middle thyroid other jugular veins: external • anterior • arch vertebral (deep cervical)
diploic/brain	cerebral: superior • middle • inferior • great • internal (basal) cerebellar: superior • inferior
sinuses of the dura mater	sigmoid • transverse (petrosquamous) confluence: superior sagittal • straight (inferior sagittal) • occipital cavernous (sphenoparietal) • inferior petrosal (basilar plexus) • intercavernous • superior petrosal • emissary
ophthalmic	superior ophthalmic • central retinal • nasofrontal • inferior ophthalmic • vorticose veins
internal auditory veins