NU FS305 Lecture Notes - Lecture 13: Bone Density, Cottage Cheese, Vitamin D Deficiency

• School: University of Alberta
• Department: Nutrition and Food Sciences
• Course: NU FS305
• Professor: Donna Vine

Document Summary

The part that releases calcium, gets metabolized and changes more rapidly than cortical bone. Trabecular bone: lacy inner structure of bone; provides calcium storage; higher turnover. Cortical bone: very dense outer structure of bone. Small bones have low to no amount of trabecular bone. Bone mineral density: the amount of mineral crystals in the bone matrix. Mineralization: higher the density, the stronger the bone. Bone is a living tissue, always grows, mineralizes, and de-mineralizes all the time. 35 80+ years: bone loss (older age need to maintain good diet) Osteoclast: eat up the bone/break it down, release minerals to bloodstream, then extra ca coming in they fill up and fill in the parts. Also when there is a damage to the bone, the osteoblast will come and heal the bone. Major mineral most abundant mineral in the body. 1. 0 1. 5 kg of whole body weight. Muscle contraction (calcium in the rest of the body contribute to muscle contraction)