The petrous portion is among the most basal elements of the skull and forms part of the endocranium. Petrous comes from the Latin word petrosus, meaning "stone-like, hard". It is one of the densest …

Jul 21, 2025 · The petrous part of the temporal bone, also known as the petrous temporal bone (PTB), petrous pyramid, or petrous face 5, forms the part of skull base between the sphenoid and occipital …

Dec 1, 2025 · The petrous part is pyramidal shaped, and lies at the base of temporal bone. It contains the inner ear. The temporal bone serves as a point of attachment for many muscles.

Mar 10, 2023 · The petrous part of temporal bone has a triangular or pyramid-like shape, with its apex directed forward and inward, and its base facing outward and to the side.

Petrous apex anatomy The petrous portion is the most medial aspect of the temporal bone. It is bounded medially by the petro-occipital synchondrosis (see Fig. 2), which contains embryonic rests capable of …

Aug 26, 2023 · The petrous part is a wedge shaped mass of bone located between the sphenoid and occipital bones within the cranial cavity. It is the most medial part of the temporal bone, and it is the …

Dec 26, 2025 · The meaning of PETROUS is of, relating to, or constituting the exceptionally hard and dense portion of the human temporal bone that contains the internal auditory organs.

The petrous portion of the temporal bone is a complex bony structure of the skull base that contains key components of the middle and inner ear as well as essential neurovascular elements.

Petrous (rock-like) part: It is located in the base of the skull between the greater wing of the sphenoid bone anteriorly and the occipital bone posteriorly. It separates the middle cranial fossa from the …

Aug 15, 2025 · The temporal bone is situated on the sides and the base of the cranium, lateral to the temporal lobe of the cerebrum. The temporal bone is one of the most important calvarial and skull …