FNN 111 Chapter Notes - Chapter 9: Bone Resorption, Bone Remodeling, Bone

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

Document Summary

Fnn chapter 9: nutrients involved in bone health. Our bones are not rigid, but rather flexible and strong to withstand movement. Bone composition: 65% composed of minerals (majority being calcium and phosphorus) and 35% organic material to provide strength, durability, and flexibility. Two distinct types of tissue form our bones: cortical bone and trabecular bone. Cortical (compact) bone: dense structure with microscopic openings which act as passageways for blood vessels and nerves. Cortical bone composes 80% of bone structure and is present on all outer surfaces of bones and completely composes small bones within our wrists, hands, and feet. Trabecular bone: referred to as spongy bone because of its cavities which act as support to cortical bone. Because of its structure, this type of bone is commonly fractured before cortical bone. Trabecular bone is renewed at a higher rate than cortical bone making it more susceptible to nutrient deficiencies and hormone changes.