ANP 1106 Lecture Notes - Lecture 5: Intervertebral Disc, Hyoid Bone, Osteoporosis

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

Document Summary

When calcium levels and therefore stimulus decreases the parathyroid gland releases more pth (parathyroid hormone) The osteoclasts degrade bone matrix and increased rate to make up for it. Bone resorption outpaces bone formation -> they become porous. Some areas especially vulnerable: spine, neck of femur. Estrogen and testostore promote bone heath by restraining osteoclast activity promoting deposition of bone. Other contributing factors include: insuf cient excersize, poor diet (low in ca, protiens, vit d), smoking. Continuing on ppt b, bones of the skull and face: Horizontal plates form part of hard palate. Vertical plates - nasal cavity & orbit. Single thin bone forms nasal septum (see fig. [superior and middle nasal conchae from ethmoid bone] Sphenoid - yellow - behind temples at nose bridge height. Lighten skull and enhance resonance of voice; connect to nasal cavity so also help to warm & humidify incoming air.