Skull: Anatomy, structure, bones, quizzes | Kenhub The facial skeleton is referred to as all skull bones anteroinferior to the cranial cavity. Prominent representatives are the maxilla (upper jaw) and the mandible (lower jaw). The orbita and the nasal cavity are formed by the zygomatic, nasal, palatine, lacrimal bones, the vomer and the inferior nasal concha (lower turbinate).