Occipital sinus: Difference between revisions

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{{Short description|Organ In the brain}}
{{Infobox Vein |
{{Infobox vein
Name = Occipital sinus |
Latin = sinus occipitalis |
| Name = Occipital sinus
| Latin = sinus occipitalis
GraySubject = 171 |
GrayPage = 658 |
| Image = Gray488.png
Image = Gray488.png |
| Caption = Dural veins
Caption = Dural veins |
| Image2 = Gray570.png
⚫
| Caption2 = The sinuses at the base of the skull. (Occipial sinus visible at bottom center, below the Foramen Magnum on image.)
Image2 = Gray570.png |
⚫
| DrainsFrom =
⚫
Caption2 = The sinuses at the base of the skull. (Occipial sinus visible at bottom center.) |
⚫
| DrainsTo = [[confluence of sinuses]]
⚫
DrainsFrom = |
⚫
| Artery =
⚫
DrainsTo = [[confluence of sinuses]] |
⚫
Artery = |
MeshName = Cranial+Sinuses |
MeshNumber = A07.231.908.224 |
DorlandsPre = s_12 |
DorlandsSuf = 12738998 |
}}
}}
The '''occipital sinus''' is the smallest of the [[cranial sinuses]].
The '''occipital sinus''' is the smallest of the [[dural venous sinuses]]. It is usually unpaired, and is sometimes altogether absent. It is situated in the attached margin of the [[falx cerebelli]]. It commences near the [[foramen magnum]], and ends by draining into the [[confluence of sinuses]].


Occipital sinuses were discovered by [[Guichard Joseph Duverney]].{{Citation needed|date=November 2022}}
⚫
It is situated in the attached margin of the [[falx cerebelli]], and is generally single, but occasionally there are two.


== Anatomy ==
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 [[internal vertebral venous plexuses|posterior internal vertebral venous plexuses]] and ends in the [[confluence of the sinuses]].
The occipital sinus is present in around 65% of individuals.<ref>{{cite web |title=Sinus occipitalis |url=https://www.ars-neurochirurgica.com/lexikon/sinus-occipitalis |access-date=11 April 2022 |website=Ars Neurochirurgica}}</ref> It is usually single, but occasionally paired.<ref name=":0">{{Cite book |last=Gray |first=Henry |url=https://archive.org/details/anatomyofhumanbo1918gray?view=theater#page/658/mode/2up |title=Gray's Anatomy |year=1918 |edition=20th |pages=658}}</ref>

⚫
It is situated in the attached margin of the [[falx cerebelli]].<ref name=":0" />

=== Course ===
The occipital sinus commences around the margin of the [[foramen magnum]]<ref name=":0" /> by several small venous channels (one of which joins the terminal part of the [[sigmoid sinus]]). It terminates by draining into the [[confluence of the sinuses]].<ref name=":2">{{Cite book |url=https://www.worldcat.org/oclc/1201341621 |title=Gray's anatomy : the anatomical basis of clinical practice |date=2021 |others=Susan Standring |isbn=978-0-7020-7707-4 |edition=Forty-second |location=[New York] |pages=404 |oclc=1201341621}}</ref>

=== Communications ===
The occipital sinus communicates with the [[marginal sinus]],<ref name=":2" /> and [[internal vertebral venous plexuses|posterior internal vertebral venous plexuses]].<ref name=":0" />


==Additional images==
==Additional images==
<gallery>
<gallery>
Image:Gray193.png|Base of the skull. Upper surface.
File:Gray193.png|Base of the skull. Upper surface.
</gallery>
</gallery>


==See also==
== References ==
{{Reflist}}
* [[Dural venous sinuses]]


{{Gray's}}
{{VeinsHeadNeck}}
{{VeinsHeadNeck}}
{{Portal bar|Anatomy}}
{{Authority control}}


[[Category:Veins of the head and neck]]
[[Category:Veins of the head and neck]]

Revision as of 12:18, 8 October 2023

Occipital sinus
Dural veins
The sinuses at the base of the skull. (Occipial sinus visible at bottom center, below the Foramen Magnum on image.)
Details
Drains toconfluence of sinuses
Identifiers
Latinsinus occipitalis
TA98A12.3.05.105
TA24855
FMA50781
Anatomical terminology

The occipital sinus is the smallest of the dural venous sinuses. It is usually unpaired, and is sometimes altogether absent. It is situated in the attached margin of the falx cerebelli. It commences near the foramen magnum, and ends by draining into the confluence of sinuses.

Occipital sinuses were discovered by Guichard Joseph Duverney.[citation needed]

Anatomy

The occipital sinus is present in around 65% of individuals.[1] It is usually single, but occasionally paired.[2]

It is situated in the attached margin of the falx cerebelli.[2]

Course

The occipital sinus commences around the margin of the foramen magnum[2] by several small venous channels (one of which joins the terminal part of the sigmoid sinus). It terminates by draining into the confluence of the sinuses.[3]

Communications

The occipital sinus communicates with the marginal sinus,[3] and posterior internal vertebral venous plexuses.[2]

Additional images

  • Base of the skull. Upper surface.
    Base of the skull. Upper surface.

References

  1. ^ "Sinus occipitalis". Ars Neurochirurgica. Retrieved 11 April 2022.
  2. ^ a b c d Gray, Henry (1918). Gray's Anatomy (20th ed.). p. 658.
  3. ^ a b Gray's anatomy : the anatomical basis of clinical practice. Susan Standring (Forty-second ed.). [New York]. 2021. p. 404. ISBN 978-0-7020-7707-4. OCLC 1201341621.{{cite book}}: CS1 maint: location missing publisher (link) CS1 maint: others (link)
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