Temporal bone

What is the petrous bone? The petrous bone, pars petrosa, is one of three bones that make up the temporal bone. The other two bones are the pars tympanica and the pars squamosa. For the most part, the petrous bone projects into the interior of the bony skull (exception: mastoid process). The pars petrosa owes … Petrous bone (Petrous pyramid): Structure & Function