ANP 1106 Lecture 4: ANP1106Lecture4Summary

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

Document Summary

206 bones in the human body that make up about 20% of body weight. Grouped into the axial skeleton (bones of skull, vertebral column, rib cage) and the appendicular skeleton (bones of upper & lower limbs + pectoral/pelvic girdles (attach limbs to axial skeleton)) Skull has eye orbits & paranasal sinuses, houses organs of hearing, has 85 openings for nerves, blood vessels & spinal cord. Vault (calvaria): forms the superior, lateral and posterior aspects of skull and well as the forehead. Base: inferior aspect, anterior, middle and posterior cranial fossae, brain sits snugly in these cranial fossae. Unpaired: frontal, occipital, sphenoid and ethmoid bones. Curvature allows them to be self-bracing; can be strong while being quite thin. Articulates posteriorly with the paired parietal bones via the prominent coronal suture. Squamous part: forehead ends inferiorly at the supraorbital margins. Supraorbital margins: orbits that lie under the eyebrows. Anterior cranial fossa: supports frontal lobes of brain.