Final answer:
The crown is defined as the area between the apex and the frontal bone. The frontal bone forms the forehead and the supraorbital margin of the orbit. It extends posteriorly and forms the roof of the orbit below and the floor of the anterior cranial cavity above.
Step-by-step explanation:
The crown is defined as the area between the apex and the frontal bone. The frontal bone is the bone that forms the forehead and the supraorbital margin of the orbit. It extends posteriorly and forms the roof of the orbit below and the floor of the anterior cranial cavity above.