How many bones are in the upper jaw?

The upper jaw, known as the maxilla, is actually made up of two bones that are fused together at the midline. These two maxillary bones are crucial for several functions, including forming the majority of the hard palate, supporting the upper teeth, and contributing to the structure of the face. The maxilla also plays an important role in the nasal cavity and the orbit of the eye. Understanding that the upper jaw is constructed from two specific bones highlights its importance in both anatomy and physiology as it provides structure, support, and essential functions for various biological systems.