What bones in the face form most of the upper jaw?

The maxillae are the bones in the face that primarily form the upper jaw. These paired bones support the upper teeth and play a crucial role in facial structure and formation. They articulate with several other facial bones, contributing to the orbits of the eyes and the sides of the nasal cavity. Their importance is underscored by their involvement in various functions such as forming the palate, allowing for the proper alignment of teeth, and facilitating speech and chewing.

The mandible, or lower jawbone, is responsible for the movement of the jaw and contains the lower teeth. The palatine bones form part of the hard palate and contribute to the floor of the nasal cavity but do not form the upper jaw. The nasal bones are small and form the bridge of the nose, lacking a role in the structure of the upper jaw. Hence, the maxillae is the correct choice, properly indicating its significant contribution to the formation of the upper jaw.