FNN 111 Chapter Notes - Chapter 9: Skimmed Milk, Kyphosis, Amenorrhoea

• School: Ryerson University
• Department: Nutrition and Food
• Course: FNN 111
• Professor: Sharon Wong

Document Summary

Maintaining bone mass is important to prevent serious injuries later in life, and to prevent osteoporosis (porous bone) Ca and vd throughout life is crucial in building strong bones. The composition of bone provides strength and flexibility. Bones need to be both strong and flexible to resist compression, stretching, and twisting. 65% is made up of an assortment of minerals (mostly ca and p) 35% is a mixture of organic substances that provide strength, durability, and flexibility. * collagen (fibrous protein in bone tissue) Within the bones, the minerals form crystals that cluster around the collagen fibres. Allows us to bear weight and move. Cortical bone: (aka compact bone) very dense, 80% of the skeleton, outer surface of all bones, small bones are completely cortical, contains very small openings for passageway of blood vessels and nerves. The constant activity of bone tissue promotes bone health. Bone growth *early months of fetal life.