Back جيب صخري سفلي Arabic Sinus petrosus inferior German Seno petroso inferior Spanish Sinus pétreux inférieur French 아래바위정맥굴 Korean Zatoka skalista dolna Polish Seio petroso inferior Portuguese Sinus petrosal inferior Romanian Dolný skalný splav Slovak İnferior petrozal sinus Turkish
| Inferior petrosal sinus | |
|---|---|
 Dural veins | |
 The sinuses at the base of the skull. (Inferior petrosal sinus visible at center, between superior petrosal sinus and basilar plexus.) | |
| Details | |
| Source | Cavernous sinus |
| Drains to | Internal jugular vein |
| Identifiers | |
| Latin | sinus petrosus inferior |
| TA98 | A12.3.05.113 |
| TA2 | 4858 |
| FMA | 50770 |
| Anatomical terminology | |
The inferior petrosal sinuses are two small sinuses situated on the inferior border of the petrous part of the temporal bone, one on each side. Each inferior petrosal sinus drains the cavernous sinus into the internal jugular vein.
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