NFS 100 Lecture Notes - Lecture 9: Spasm, Hard Water, Osteomalacia

• School: Drexel University
• Department: Nutrition & Food Science
• Course: NFS 100
• Professor: Joseph Boullata

Document Summary

Function: living organs with several tissues where nerves and blood vessels run within the bone tissue to support activity contain tissues composed of minerals and fibrous protein (collagen) composition provides strength and flexibility. 65% of bone tissue is made up of minerals (calcium and phosphorous) to provide hardness. 35% is a mix of organic substances for strength, durability and flexibility: most important substance/ protein that forms strong fibers in bones and connective tissue, hydroxyapattie: tiny crystals formed from minerals that cluster around collagen. Bone modeling: higher rate of age fractures in spine and pelvis. Bone density: compactness of bone tissue, reflecting strength of bone. Female: 90% by 17; men 20: peak bone density: point where bone is the strongest. 40s decline in density: low peak bone density: late puberty in boys and late onset of menstruation, inadequate calcium, low weight, inactivity.