The petrous part of the temporal bone is pyramid-shaped 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 a base, an apex, three surfaces, and three angles, and houses in its interior, the components of the inner ear.
The petrous part of the temporal bone is a pyramid-shaped structure located at the base of the skull, wedged between the sphenoid and occipital bones. It has a medial, forward, and slightly upward orientation, with a base, apex, three surfaces, and three angles. The inner ear components reside within its interior.