jugular fossa


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jug·u·lar fos·sa

[TA]
an oval depression near the posterior border of the petrous portion of the temporal bone, medial to the styloid process, in which lies the beginning of the internal jugular vein (jugular bulb);
Synonym(s): fossa jugularis [TA]
Farlex Partner Medical Dictionary © Farlex 2012

jug·u·lar fos·sa

(jŭg'yū-lăr fos'ă) [TA]
An oval depression near the posterior border of the petrous portion of the temporal bone, medial to the styloid process, in which lies the beginning of the internal jugular vein (jugular bulb).
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

jugular fossa

On the base of the skull, a kidney bean-shaped depression in the undersurface of petrous portion of the temporal bone. The fossa is behind the carotid canal, from which it is separated by a ridge of bone, and it forms a pocket for the superior bulb of the jugular vein, just after the vein has exited the skull through the jugular foramen.
See also: fossa
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
The procedure involved a left intact-wall tympanomastoidectomy, a facial recess approach to the middle ear that exposed the tumor (figure 2), a retrofacial approach to the jugular bulb and skull base, a resection of the intra- and extracranial components of the jugular bulb neoplasm via a transmastoid approach to the hypotympanum and jugular fossa, and placement of a lumbar drain.
Primary jugular fossa meningiomas arise from arachnoid cells that line the jugular bulb in the jugular fossa.
Although basal posterior fossa meningiomas are likely to grow into the jugular fossa through the jugular foramen, primary jugular fossa meningiomas are extremely rare.
The jugular fossa and jugular foramen are frequently confused for each other, and these two terms are sometimes used interchangeably.
Jugular fossa meningiomas frequently invade bone, including the jugular spine and the jugular tubercle.
High-resolution CT can identify asymmetry in the size of the jugular fossa with preservation of the roof and jugular spine.