FNN 100 Lecture Notes - Lecture 12: Transferrin Receptor, Bone Density, Ferritin

• School: Ryerson University
• Department: Nutrition and Food
• Course: FNN 100
• Professor: Barbara Wendland

Document Summary

Fnn module 9 other vitamins and trace minerals. Found in 2 forms: phylloquinones plant foods, primarily from the diet, menaquinones fish oils, meats, synthesized by bacteria in intestine, form found in supplements. Produced by gut bacteria in git - some is absorbed. Destroyed by exposure to light and low or high acid conditions. Coenzyme needed for production of blood clotting factors including prothrombin. Blood clotting factors proteins that circulate an inactive form when activated leads to the formation of fibrin: forms structure of clot. Association b/w low-dietary vit k & low bone mineral density or increased fractures. Preventing calcification of blood vessels and loss of elasticity maintains heart health. Need constant supply of vit k as the supply is used rapidly. Form synthesized by gut is not well absorbed and not enough to meet needs. Most common in newborns: little vit k across placenta, breast milk is low in vit k.