What are the primary bones that comprise the skull?

The primary bones that comprise the skull include the frontal, parietal, temporal, occipital, sphenoid, and ethmoid bones. These bones collectively form the protective casing for the brain and are essential for providing structure to the head.

The frontal bone forms the forehead and the upper parts of the eye sockets. The parietal bones make up the sides and roof of the cranial cavity, while the temporal bones are located on the sides of the skull and house structures essential for hearing. The occipital bone is found at the base of the skull and encases the lower part of the brain. The sphenoid bone, often referred to as a keystone bone, articulates with many other cranial bones and contributes to the base of the skull, while the ethmoid bone forms part of the nasal cavity and orbits, playing a crucial role in separating the nasal cavity from the brain.

In contrast, the other options focus on bones that are either parts of the facial skeleton or belong to other body regions entirely, which do not contribute to the primary structure of the skull. The maxillary, nasal, palatine, and lacrimal bones are facial bones but do not form the cranial structure. Similarly, mentioning bones