Inferior sagittal sinus

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Vein: Inferior sagittal sinus

Dural veins (Inferior sagittal sinus labeled as "SIN. SAGITTALIS INF." at upper right.)

Dura mater and its processes exposed by removing part of the right half of the skull, and the brain. (Inferior sagittal sinus visible as blue line at center.)
Latin	sinus sagittalis inferior
Gray's	subject #171 655
Drains to	straight sinus
MeSH	Cranial+Sinuses
Dorlands / Elsevier	s_12/12739202

The inferior sagittal sinus (also known by the alternate term inferior longitudinal sinus), within the human head, is an area beneath the brain, which allows blood veins to span the area, from the center of the head towards the back. It drains (from the center of the brain) to the straight sinus (at the back of the head), then to the transverse sinuses. See diagram (at right): labeled in the brain as "SIN. SAGITTALIS INF." (for Latin: sinus sagittalis inferior).

The inferior sagittal sinus courses along the inferior border of the falx cerebri, superior to the corpus callosum.

It receives blood from the deep and medial aspects of the cerebral hemispheres and drains into the straight sinus.

[edit] Additional images

Sagittal section of the skull, showing the sinuses of the dura.

Human brain dura mater (reflections)

[edit] See also

Dural venous sinuses

[edit] References

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

v • d • e

Veins (emissary, jugular and others) and sinuses of head and neck (drainage patterns can vary)

to external jugular

retromandibular: maxillary • superficial temporal (anterior auricular)

posterior auricular

transverse cervical - suprascapular - anterior jugular (jugular venous arch)

to internal jugular

Diploic/brain	cerebral: superior • middle • inferior • great • internal (basal, superior thalamostriate) cerebellar: superior • inferior To COS: superior sagittal • straight (inferior sagittal) • occipital To CS: sphenoparietal • intercavernous superior ophthalmic (ethmoidal, central retinal, nasofrontal) • inferior ophthalmic • vorticose veins To IJV: sigmoid: transverse (petrosquamous) • superior petrosal inferior petrosal (basilar plexus, internal auditory veins) - condylar

Other	common facial • facial (frontal, supraorbital, angular, superior labial, inferior labial, deep facial) • pterygoid plexus lingual (dorsal lingual, deep lingual, sublingual) • pharyngeal • thyroid (superior/superior laryngeal, middle)