Final answer:
The submandibular fossa is also known as the submaxillary fossa. It is a shallow space below the zygomatic arch and deep to the mandible, containing muscles for chewing.
Step-by-step explanation:
The submandibular fossa is also known as the submaxillary fossa. It is a shallow space located below the zygomatic arch and deep to the vertical portion of the mandible. Muscles in this fossa are responsible for chewing movements.