What is the name of the gap that allows large jaw muscles to pass through?

The gap that allows large jaw muscles to pass through is known as the zygomatic arch. This structure is formed by the zygomatic bone and contributions from the temporal bone. It serves as an important attachment point for muscles involved in chewing, specifically the masseter, which is one of the primary muscles responsible for elevating the jaw during mastication.

The zygomatic arch not only provides structural support to the face but also allows ample space for these larger muscles to function effectively. This anatomical feature is crucial for the mechanical advantage needed during the powerful movements of the jaw, which are essential for a varied diet.

In contrast, the palatine fissure is a space located in the palate of the mouth, the maxillary arch refers to the curved structure of the maxilla that holds teeth, and the cranial vault pertains to the upper part of the skull that encases the brain. These structures do not provide the same functionality related to the passage of jaw muscles as the zygomatic arch does.