Jugular fossa

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Bone: Jugular fossa
Image:Jugular fossa.PNG
Base of the skull. Inferior surface. Jugular fossa labeled in purple near center.
View of the inner wall of the tympanum. (Jugular fossa visible at bottom.)
Latin	fossa jugularis ossis temporalis
Gray's	subject #34 144
Dorlands / Elsevier	f_14/12376246

The jugular fossa is a deep depression in the inferior part of the base of the skull. More specifically, it is located in the temporal bone, behind the openings for the carotid canal and the aquæductus cochleæ. It is of variable depth and size in different skulls; it lodges the bulb of the internal jugular vein.

In the bony ridge dividing the carotid canal from the jugular fossa is the small inferior tympanic canaliculus for the passage of the tympanic branch of the glossopharyngeal nerve.

In the lateral part of the jugular fossa is the mastoid canaliculus for the entrance of the auricular branch of the vagus nerve.

Behind the jugular fossa is a quadrilateral area, the jugular surface, covered with cartilage in the fresh state, and articulating with the jugular process of the occipital bone.

See also

• Fossa

Additional images

Left temporal bone. Inferior surface. (Label for jugular fossa at left, sixth from bottom.)x

External links

• Picture (#32 on third diagram)
• Roche Lexicon - illustrated navigator, at Elsevier 34257.000-1

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 As such, some of the information contained herein may be outdated.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