ANP 1106 Lecture Notes - Lecture 2: Anterior Cranial Fossa, Appendicular Skeleton, Cranial Vault

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1106
• Professor: Jackie Carnegie

Document Summary

There are 206 bones in the human skeleton, they make up about 20% of the body weight. Internally there are 3 bony ridges that divide the cranial base into 3 distinct areas: anterior fossa (highest, middle fossa (middle, posterior fossa (lowest, fossa are shallow depressions in a bone. There are 8 cranial bones: left and right parietal, left and right temporal, frontal, occipital, sphenoid, ethmoid. Curvature allows them to be self-bracing, this allows the bones to be thin while at the same time being strong. Dome shaped bone that also forms the roof of the orbits and anterior cranial fossa. Articulates with the paired parietal bones posteriorly. *note the supraorbital margin, supraorbital foramen and glabella (area between eyes) The area lateral to the glabella has a left and right frontal sinus within the bone. Paired together, form the superior and lateral aspects of the skull. Form the bulk of the cranial vault.