What is petrous portion?

Petrous Portion

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Some articles on petrous portion:

Petrous Portion Of The Internal Carotid Artery
... 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 first ascends a short distance, then ... bone, which forms the floor of the fossa for the ganglion and the roof of the horizontal portion of the canal ...
Petrous Portion
... Petrous portion can refer to Petrous portion of the temporal bone Petrous portion of the internal carotid artery ...

Famous quotes containing the word portion:

    A man might well pray that he may not taboo or curse any portion of nature by being buried in it.
    Henry David Thoreau (1817–1862)