Jugular fossa
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| Jugular fossa | |
|---|---|
| Left temporal bone. Inferior surface. (Label for jugular fossa at left, sixth from bottom.) | |
| View of the inner wall of the tympanum. (Jugular fossa visible at bottom.) | |
| Gray's | subject #34 144 |
In the temporal bone, behind the openings for the carotid canal and the aquæductus cochleæ is a deep depression, the jugular fossa, 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.
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