Occipital sinus

Occipital sinus
Vein: Occipital sinus
Gray488.png
Dural veins
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The sinuses at the base of the skull. (Occipial sinus visible at bottom center, below the Foramen Magnum on image.)
Latin sinus occipitalis
Gray's subject #171 658
Drains to confluence of sinuses
MeSH Cranial+Sinuses

The occipital sinus is the smallest of the cranial sinuses.

It is situated in the attached margin of the falx cerebelli, and is generally single, but occasionally there are two.

It commences around the margin of the foramen magnum by several small venous channels, one of which joins the terminal part of the transverse sinus; it communicates with the posterior internal vertebral venous plexuses and ends in the confluence of the sinuses.

Additional images

  • Base of the skull. Upper surface.

See also

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

v · d · eVeins (emissary, jugular and others) of head and neck (drainage patterns can vary) (TA A12.3.04–06, GA 7.644)
External jugular
Direct
Internal jugular

Superficial cerebral veins: superior · superficial middle · inferior  · inferior anastomotic (Labbé)  · superior anastomotic (Trolard)

Deep cerebral veins: great · internal (basal, deep middle, superior thalamostriate)
To COS
To CS
To IJV
Direct
Brachiocephalic
Direct

M: VAS

anat(a:h/u/t/a/l,v:h/u/t/a/l)/phys/devp/cell/prot

noco/syva/cong/lyvd/tumr, sysi/epon, injr

proc, drug(C2s+n/3/4/5/7/8/9)

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Look at other dictionaries:

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  • occipital sinus — noun : a venous sinus lodged in a groove on the internal occipital crest …   Useful english dictionary

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  • sinus marginalis — [TA] marginal sinus: any of the variably developed veins that connect the occipital sinus with the vertebral venous plexuses …   Medical dictionary

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  • Occipital vein — Vein: Occipital vein Veins of the head and neck. (Occipial visible at left.) …   Wikipedia

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