The infratemporal fossa is an irregularly shaped cavity that is a part of the skull.

[1] It also contains some of its branches, including the: The infratemporal fossa contains the pterygoid plexus,[1] and the retromandibular vein.

The mandibular nerve also gives off many sensory branches, including: The infratemporal fossa is connected to other spaces in the skull.

It is connected to the temporal fossa, which lies deep to zygomatic arch.

[5] This article incorporates text in the public domain from page 184 of the 20th edition of Gray's Anatomy (1918)