Natural size. The model consists of 18 independent parts corresponding to natural bones. In addition to the skull (frontal, parietal, occipital, and sphenoid), the visceral skull (ethmoid, vomer, palatine, cheekbone, maxilla and mandible) and inferior turbinate can be removed and reassembled to form a complete skull . Assembling different bones together can provide an impressive picture of the spatial structure of the skull. This also helps to better understand the location of various bone cavities (eye sockets, nasal cavity, etc.).