Petrous part of temporal bone
Petrous part of temporal bone
Definition
The petrous portion of the temporal bone or pyramid is pyramidal and is wedged in at the base of the skull between the sphenoid and occipital bones. Directed medially, forward, and a little upward, it presents for examination a base, an apex, three surfaces, and three angles, and contains, in its interior, the essential parts of the organ of hearing. The petrous portion is among the most basal elements of the skull and forms part of the endocranium.[WP,unvetted].
Also known as pars petrosa (os temporale), pars petrosa ossis temporalis, petromastoid part of temporal bone, temporal bone petrous part — per UBERON
The Petrous part of temporal bone is a part of the Musculoskeletal.