NUTR100 Chapter Notes -Calcification, Osteoclast, Vitamin D Deficiency
30 Apr 2013
School
Department
Course
Professor
Document Summary
Feb 25 ch 9 nutrient involved in bone health. Bone structure: provides strength to support the body, allows for flexibility, contains about 65% minerals providing the hardness of bone, contains 35% organic structures for strength, durability, flexibility, collagen: fibrous protein in bone tissue. Cortical bone (compact bone): very dense tissue making up 80% of the skeleton (outer surface of all bone) Trabecular bone (spongy bone): scaffolding on the inside of bones; supports cortical bone and makes up 20% of the skeleton. (found on ends of long bones and vertebrae) Bone growth increase in bone size; completed by age 14 in girls and age 17 in boys. Bone modelling shaping of bone; completed by early adulthood. Bone remodelling reshaping of bone; occurs in adults to maintain bone; repair process. Bone remodelling involves: resorption surface of bones is broken down, osteoclasts cells that erode the surface of bones.
