superior petrosal sinus

Information about superior petrosal sinus

*Vein: Superior petrosal sinus*

Dural veins

The sinuses at the base of the skull. (Superior petrosal sinus visible at center left.)
Latin	sinus petrosus superior
	subject #171 659
Source	cavernous sinus
Drains to	sigmoid sinus
MeSH	Cranial+Sinuses

The superior petrosal 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 downward. It drains from the cavernous sinus (beneath the brain) to the transverse sinuses, which lead further to the internal jugular vein. See diagram (at right): labeled under the brain as "S. PETROS. SUP." (for Latin: sinus petrosus superior).

The superior petrosal sinus, small and narrow, connects the cavernous with the transverse sinus.

It runs lateralward and backward, from the posterior end of the cavernous sinus, over the trigeminal nerve, and lies in the attached margin of the tentorium cerebelli and in the superior petrosal sulcus of the temporal bone; it joins the transverse sinus where the latter curves downward on the inner surface of the mastoid part of the temporal.

It receives some cerebellar and inferior cerebral veins, and veins from the tympanic cavity.

Additional images

Base of the skull. Upper surface.

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

Tentorium cerebelli from above.

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 As such, some of the information contained herein may be outdated.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.

Latin}}}
Official status
Official language of: Vatican City
Used for official purposes, but not spoken in everyday speech
Regulated by: Opus Fundatum Latinitas
Roman Catholic Church
Language codes
ISO 639-1: la
ISO 639-2: lat
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The cavernous sinus (or lateral sellar compartment), within the human head, is a large collection of thin-walled veins creating a cavity bordered by the sphenoid bone and the temporal bone of the skull.
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The sigmoid sinuses (left & right), within a human head, are 2 areas beneath the brain, which allow blood veins to span the area, from the center of the head downward. They drain from the transverse sinuses (under the back of the brain) to the internal jugular vein.
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Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. Created and updated by the United States National Library of Medicine (NLM), it is used by the MEDLINE/PubMed
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transverse sinuses (left & right lateral sinuses), within a human head, are 2 areas beneath the brain, which allow blood veins to span the area, from the back of the head towards the nose.
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The internal jugular vein collects the blood from the brain, from the superficial parts of the face, and from the neck.

Path

It is directly continuous with the sigmoid sinus, and begins in the posterior compartment of the jugular foramen, at the base of the skull.
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The tentorium cerebelli or cerebellar tentorium (Latin: "tent of the cerebellum") is an extension of the dura mater that separates the cerebellum from the inferior portion of the occipital lobes.
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The temporal bones are situated at the sides and base of the skull.

The temporal bone supports that part of the face known as the temple.

Parts

Each consists of five parts:

Squama temporalis
Mastoid portion
Petrous portion
Tympanic part

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The mastoid process is a conical prominence projecting from the undersurface of the mastoid portion of the temporal bone. It is located just behind the external acoustic meatus, and lateral to the styloid process.
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Temporal can refer to:

of or relating to time
Temporal database, a database recording aspects of time varying values

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The cerebellum (Latin: "little brain") is a region of the brain that plays an important role in the integration of sensory perception and motor output. Many neural pathways link the cerebellum with the motor cortex—which sends information to the muscles causing them
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The inferior cerebral veins, of small size, drain the under surfaces of the hemispheres.

Those on the orbital surface of the frontal lobe join the superior cerebral veins, and through these open into the superior sagittal sinus.
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The tympanic cavity is a small cavity surrounding the bones of the middle ear.

It is formed from the tubotympanic sulcus, an expansion of the first pharyngeal pouch.
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The dural venous sinuses (also called dural sinuses, cerebral sinuses, or cranial sinuses) are venous channels found between layers of dura mater in the brain.
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Public domain comprises the body of knowledge and innovation (especially creative works such as writing, art, music, and inventions) in relation to which no person or other legal entity can establish or maintain proprietary interests within a particular legal jurisdiction.
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Henry Gray's Anatomy of the Human Body (or Gray's Anatomy as it has commonly been shortened) is an English-language human anatomy textbook widely regarded as a classic work on the subject.
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