Assertion: frontal bone's surface | /r/HasProperty | rough
Facets:
Source sentences:
text: The outside surface is rough and attaches to the cartilage portion of the acoustic meatus, whereas its interior fuses with the petrous portion, just below the ear canal.
text: The outside surface is rough and attaches to the cartilage portion of the acoustic meatus, whereas its interior fuses with the petrous portion, just below the ear canal.