Identify the region of the temporal bone found superior to the external acoustic meatus that articulates with the parietal bone.

This question does not have the necessary options; the choices should be A. Petrous part B. Mastoid process C. Tympanic part D. Squamous part. The correct option is D. The squamous part constitutes the major area of the lateral side of the temporal bone, located on the external acoustic meatus. Its outer surface is smooth, while the inner surface is slightly curved. This section interfaces with the parietal bone and is divided into two segments: a vertical and a small horizontal part, separated by the zygomatic process. The exterior of the vertical segment is smooth and convex, featuring a vascular groove that ascends backwards for the middle meningeal artery and is covered by the temporal muscle. The horizontal crest, a backward extension of the zygomatic process, is known as the mastoid crest or temporal line, indicating the level of the middle cranial fossa’s floor and is crucial for mastoidectomy. Above and slightly to the back of the external acoustic canal, a pointed structure called the suprathetic spine or Henle's spine appears, along with a cribriform or supramathetic fossa behind it. The inner face of the vertical aspect of the temporalis scales partially covers the temporal lobe of the brain, forming part of the middle cranial fossa, where impressions of the cerebral convolutions and a deep channel for the middle meningeal artery can be seen.