Click on the structure to specify the target of your label
This short fissure forms where the inferolateral aspect of the petrous temporal bone forms a sutural junction with the inferior part of the squamous part. This suture transmits veins from the tympanic cavity to the superior petrosal venous sinus.
Petrous means like a rock. It comes from the Latin petra meaning rock. Galen was the first to use this term to describe the thick, rock-like region of the temporal bone. Squama is Latin for scale, as in the scales of a fish or reptile. It is used to denote thin flat structures in anatomy, such as bones or cells. Fissure is from the Latin fissura meaning a cleft. Fissures are gaps in bones or gaps between neighboring bones.