Superior sagittal sinus: Difference between revisions

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{{Short description|Anatomical structure of the brain}}
{{Infobox Vein |
{{Infobox vein
Name = Super sinuses |
Latin = sinus sagittalis superior |
| Name = Superior sagittal sinus
⚫
| Latin = sinus sagittalis superior
GraySubject = 171 |
GrayPage = 654 |
| Image = Gray488_blue.gif
| Caption = Dural veins (superior sagittal sinus at top, labeled "sin. sagittalis sup." for Latin ''{{lang|la|sinus sagittalis superior}}'')
Image = Gray488_blue.gif |
⚫
| Image2 = Gray566.png
Caption = Dural veins (Superior sagittal sinus labeled as "SIN. SAGITALLIS SUP." at top.) |
⚫
| Caption2 = Superior sagittal sinus laid open after removal of the skull cap. The chordae Willisii are clearly seen. The venous lacunæ are also well shown; from two of them probes are passed into the superior sagittal sinus.
⚫
Image2 = Gray566.png |
⚫
| DrainsFrom = [[superior cerebral veins]]
⚫
Caption2 = Superior sagittal sinus laid open after removal of the skull cap. The chordæ Willisii are clearly seen. The venous lacunæ are also well shown; from two of them probes are passed into the superior sagittal sinus. |
⚫
| DrainsTo = [[confluence of sinuses]]
DrainsFrom = |
⚫
Source = [[superior cerebral veins]] |
⚫
DrainsTo = [[confluence of sinuses]] |
Artery = |
MeshName = Cranial+Sinuses |
MeshNumber = A07.231.908.224 |
DorlandsPre = s_12 |
DorlandsSuf = 12739211 |
}}
}}
The '''super sinus syndrome''' (also known as the '''superior longitudinal sinus'''), within the human head, is an unpaired area along the attached margin of [[falx cerebri]]. It allows blood to drain from the lateral aspects of anterior cerebral hemispheres to the [[confluence of sinuses]]. [[Cerebrospinal fluid]] drains through [[arachnoid granulations]] into the [[superior saggital sinus]] and is returned to venous circulation. ''See diagram (at right)'': labeled above the brain as "<small>SIN. SAGITALLIS SUP.</small>" (for Latin: ''sinus sagittalis superior'').
The '''superior sagittal sinus''' (also known as the '''superior longitudinal sinus'''), within the [[human head]], is an unpaired area along the attached margin of the [[falx cerebri]]. It allows blood to drain from the lateral aspects of anterior cerebral hemispheres to the [[confluence of sinuses]]. [[Cerebrospinal fluid]] drains through [[arachnoid granulations]] into the superior sagittal sinus and is returned to venous circulation.


==Anatomy==
==Structure==


Commencing at the [[foramen cecum]], through which it receives a vein from the nasal cavity, it runs from anterior to posterior, grooving the inner surface of the [[frontal lobe|frontal]], the adjacent margins of the two [[parietal lobes]], and the superior division of the cruciate eminence of the [[occipital lobe]]. Near the [[internal occipital protuberance]], it drains into the [[confluence of sinuses]] and deviates to either side (usually the right). At this point it is continued as the corresponding [[transverse sinus]].
Commencing at the [[Foramen cecum (frontal bone)|foramen cecum]], through which it receives [[emissary veins]] from the nasal cavity, it runs from anterior to posterior, grooving the inner surface of the [[frontal lobe|frontal]], the adjacent margins of the two [[parietal lobes]], and the superior division of the cruciate eminence of the [[occipital lobe]]. Near the [[internal occipital protuberance]], it drains into the [[confluence of sinuses]] and deviates to either side (usually the right<ref>Richard Snell's Clinical anatomy 8th Ed</ref><ref>{{cite book |last1=Moore |first1=Keith L. |title=Clinically Oriented Anatomy |publisher=Wolters Kluwer, Lippincott Williams &Wilkins |page=867 |edition=Sixth}}</ref>). At this point it is continued as the corresponding [[transverse sinus]]. The superior sagittal sinus is usually divided into three parts: anterior (foramen cecum to bregma), middle (bregma to lambda), posterior (lambda to confluence).<ref>Salunke, P., Sodhi, H. B. S., Aggarwal, A., Ahuja, C. K., Dhandapani, S. S., Chhabra, R., & Gupta, S. K. (2013). Is ligation and division of anterior third of superior sagittal sinus really safe? Clinical Neurology and Neurosurgery, 115(10), 1998–2002. http://doi.org/10.1016/j.clineuro.2013.06.003</ref>


It is triangular in section, narrow in front, and gradually increases in size as it passes backward.
It is triangular in section, narrow in front, and gradually increases in size as it passes backward.


Its inner surface presents the openings of the [[superior cerebral veins]], which run, for the most part, obliquely forward, and open chiefly at the back part of the sinus, their orifices being concealed by fibrous folds; numerous fibrous bands (chordæ Willisii) extend transversely across the inferior angle of the sinus; and, lastly, small openings communicate with irregularly shaped venous spaces (venous lacunæ) in the dura mater near the sinus.
Its inner surface presents the openings of the [[superior cerebral veins]], which run, for the most part, obliquely forward, and open chiefly at the back part of the sinus, their orifices being concealed by fibrous folds; numerous fibrous bands (chordae Willisii) extend transversely across the inferior angle of the sinus; and, lastly, small openings communicate with irregularly shaped venous spaces (venous lacunae) in the dura mater near the sinus.


There are usually three [[lacunæ]] on either side of the sinus: a small frontal, a large parietal, and an occipital, intermediate in size between the other two.
There are usually three lacunae on either side of the sinus: a small frontal, a large parietal, and an occipital, intermediate in size between the other two.


Most of the cerebral veins from the outer surface of the hemisphere open into these lacunæ, and numerous arachnoid granulations (Pacchionian bodies) project into them from below.
Most of the cerebral veins from the outer surface of the hemisphere open into these lacunæ, and numerous arachnoid granulations (Pacchionian bodies) project into them from below.


The superior sagittal sinus receives the [[superior cerebral veins]], veins from the [[diploë]] and [[dura mater]], and, near the posterior extremity of the sagittal suture, veins from the [[pericranium]], which pass through the [[parietal foramina]].
The superior sagittal sinus receives the [[superior cerebral veins]], veins from the [[diploë]] and [[dura mater]], and, near the posterior extremity of the sagittal suture, veins from the [[pericranium]], which pass through the [[parietal foramina]].

==Function==
⚫
{{Further|Dural venous sinuses}}
[[Cerebrospinal fluid]] drains through [[arachnoid granulations]] into the superior sagittal sinus and is returned to venous circulation.


==Additional images==
==Additional images==
<gallery>
<gallery>
File:Sobo 1909 590.png|Brain with sagittal sinus at centre, with various lacunae.
Image:Gray133.png|Left parietal bone. Inner surface.
Image:Gray135.png|Frontal bone. Inner surface.
File:Gray133.png|Left parietal bone. Inner surface.
Image:Gray193.png|Base of the skull. Upper surface.
File:Gray135.png|Frontal bone. Inner surface.
Image:Gray769.png|Diagrammatic representation of a section across the top of the skull, showing the membranes of the brain, etc.
File:Gray193.png|Base of the skull. Upper surface.
File:Gray769.png|Diagrammatic representation of a section across the top of the skull, showing the membranes of the brain, etc.
Image:Gray1196.png|Diagrammatic section of scalp.
File:Gray1196.png|Diagrammatic section of scalp.
Image:Human brain dura mater description.JPG|Human brain dura mater
File:Human brain dura mater description.JPG|Human brain dura mater
File:Slide6Neo.JPG|Meninges and superficial cerebral veins. Deep dissection. Superior view.
File:Slide7Neo.JPG|Meninges and superficial cerebral veins. Deep dissection. Superior view.
</gallery>
</gallery>


==See also==
==See also==
*[[Superficial veins of the brain]]
⚫
* [[Dural venous sinuses]]


==References==
==References==
* {{Gray's}}
{{Gray's}}
{{Reflist}}

==External links==
* http://neuroangio.org/venous-brain-anatomy/venous-sinuses/
{{VeinsHeadNeck}}
{{VeinsHeadNeck}}
{{Portal bar|Anatomy}}
{{Authority control}}


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

[[ar:جيب سهمي علوي]]
[[sk:Horný šípový splav]]
⚫
[[sv:Sinus sagittalis superior]]

Revision as of 16:04, 15 February 2024

Superior sagittal sinus
Dural veins (superior sagittal sinus at top, labeled "sin. sagittalis sup." for Latin sinus sagittalis superior)
Superior sagittal sinus laid open after removal of the skull cap. The chordae Willisii are clearly seen. The venous lacunæ are also well shown; from two of them probes are passed into the superior sagittal sinus.
Details
Drains fromsuperior cerebral veins
Drains toconfluence of sinuses
Identifiers
Latinsinus sagittalis superior
MeSHD054063
TA98A12.3.05.109
TA24856
FMA50767
Anatomical terminology

The superior sagittal sinus (also known as the superior longitudinal sinus), within the human head, is an unpaired area along the attached margin of the falx cerebri. It allows blood to drain from the lateral aspects of anterior cerebral hemispheres to the confluence of sinuses. Cerebrospinal fluid drains through arachnoid granulations into the superior sagittal sinus and is returned to venous circulation.

Structure

Commencing at the foramen cecum, through which it receives emissary veins from the nasal cavity, it runs from anterior to posterior, grooving the inner surface of the frontal, the adjacent margins of the two parietal lobes, and the superior division of the cruciate eminence of the occipital lobe. Near the internal occipital protuberance, it drains into the confluence of sinuses and deviates to either side (usually the right[1][2]). At this point it is continued as the corresponding transverse sinus. The superior sagittal sinus is usually divided into three parts: anterior (foramen cecum to bregma), middle (bregma to lambda), posterior (lambda to confluence).[3]

It is triangular in section, narrow in front, and gradually increases in size as it passes backward.

Its inner surface presents the openings of the superior cerebral veins, which run, for the most part, obliquely forward, and open chiefly at the back part of the sinus, their orifices being concealed by fibrous folds; numerous fibrous bands (chordae Willisii) extend transversely across the inferior angle of the sinus; and, lastly, small openings communicate with irregularly shaped venous spaces (venous lacunae) in the dura mater near the sinus.

There are usually three lacunae on either side of the sinus: a small frontal, a large parietal, and an occipital, intermediate in size between the other two.

Most of the cerebral veins from the outer surface of the hemisphere open into these lacunæ, and numerous arachnoid granulations (Pacchionian bodies) project into them from below.

The superior sagittal sinus receives the superior cerebral veins, veins from the diploë and dura mater, and, near the posterior extremity of the sagittal suture, veins from the pericranium, which pass through the parietal foramina.

Function

Further information: Dural venous sinuses

Cerebrospinal fluid drains through arachnoid granulations into the superior sagittal sinus and is returned to venous circulation.

Additional images

  • Brain with sagittal sinus at centre, with various lacunae.
    Brain with sagittal sinus at centre, with various lacunae.
  • Left parietal bone. Inner surface.
    Left parietal bone. Inner surface.
  • Frontal bone. Inner surface.
    Frontal bone. Inner surface.
  • Base of the skull. Upper surface.
    Base of the skull. Upper surface.
  • Diagrammatic representation of a section across the top of the skull, showing the membranes of the brain, etc.
    Diagrammatic representation of a section across the top of the skull, showing the membranes of the brain, etc.
  • Diagrammatic section of scalp.
    Diagrammatic section of scalp.
  • Human brain dura mater
    Human brain dura mater
  • Meninges and superficial cerebral veins. Deep dissection. Superior view.
    Meninges and superficial cerebral veins. Deep dissection. Superior view.
  • Meninges and superficial cerebral veins. Deep dissection. Superior view.
    Meninges and superficial cerebral veins. Deep dissection. Superior view.

See also

References

Public domain This article incorporates text in the public domain from page 654 of the 20th edition of Gray's Anatomy (1918)

  1. ^ Richard Snell's Clinical anatomy 8th Ed
  2. ^ Moore, Keith L. Clinically Oriented Anatomy (Sixth ed.). Wolters Kluwer, Lippincott Williams &Wilkins. p. 867.
  3. ^ Salunke, P., Sodhi, H. B. S., Aggarwal, A., Ahuja, C. K., Dhandapani, S. S., Chhabra, R., & Gupta, S. K. (2013). Is ligation and division of anterior third of superior sagittal sinus really safe? Clinical Neurology and Neurosurgery, 115(10), 1998–2002. http://doi.org/10.1016/j.clineuro.2013.06.003

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=Superior_sagittal_sinus&oldid=1207740559"