Assertion: temporal bone's portion | /r/HasProperty | petrous
Facets:
Source sentences:
text: Its main parts include its petrous portion, tympanic portion, and mastoid portion, all of which are parts of the skull base, and its squamous and zygomatic portions (Fig. 22.1).
text: The osseous portions of the temporal bone that are most commonly involved in trauma are the petrous and mastoid.