Internal Cranial Floor View
It is composed of the endocranium and the lower parts of the skull roof.
Internal cranial floor view. If you were able to separate the cranial bones from the facial bones and first cervical vertebra and pull it away from the brain you would be able to view the internal surfaces of the cranial vault and skull base. This bone has a very small role in the floor of the cranial vault. The underside of the top of the skull is very smooth in comparison with the base of the skull. It forms the lateral wall of the middle cranial fossa and a small part of the posterior cranial fossa.
There is a printable worksheet available for download here so you can take the quiz with pen and paper. Or temporal squama pars squamosa. Inside the skull the floor of the cranial cavity is subdivided into three cranial fossae spaces which increase in depth from anterior to posterior see figure 4 figure 6b and figure 9. The sphenoid bone is a butterfly shaped cranial bone that is located in the middle of the skull between the frontal and temporal bones.
Another feature is the internal occipital protuberance which is a small projection of the internal surface of the occipital bone in the midline. Inside the skull the floor of the cranial cavity is subdivided into three cranial fossae spaces which increase in depth from anterior to posterior see figure 4 figure 6b and figure 9. Frontal sinus outlined in orange. Since the brain occupies these areas the shape of each conforms to the shape of the brain regions that it contains.
Skull cranial floor bone markings part 2 temporal bone.