Mastoid Foramen

Mastoid (mastoid) openings. The mastoid part of the temporal bone is involved in the formation of the lateral wall and roof of the external auditory canal. It is an acoustic window into the cranial cavity, through which sounds that are not perceived by the ear enter the middle ear.

The hole is located directly behind the zygomatic process of the temporal and anterior border of the pyramidal process of the temporal bones. Structurally, it is formed by the occipital part of the temporal bone in the area where the carotid artery enters it. In the lower section it is divided into two sections using a long transverse bone plate, the length of which is 25 mm.,