What structure acts as the roof of the nasal cavity?

The roof of the nasal cavity is primarily formed by the nasal bones and the frontal bone. The nasal bones contribute to the bony structure at the upper part of the nose, while the frontal bone, particularly its nasal part, extends downwards to form the superior boundary of the nasal cavity. This arrangement is crucial because it not only supports the nasal structure but also protects the underlying cranial contents.

The choice of the nasal and frontal bones together accurately reflects the anatomy of the nasal cavity roof, highlighting their role in maintaining both structural integrity and function.