Petrous portion can refer to:
- Petrous portion of the temporal bone
- Petrous portion of the internal carotid artery
Other articles related to "petrous portion, petrous, portion":
... Petrous portion of the internal carotid artery (or petrous segment).—When the internal carotid artery enters the canal in the petrous portion of the temporal bone, it ... of bone, which forms the floor of the fossa for the ganglion and the roof of the horizontal portion of the canal ...
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