HNSC 1210 Lecture Notes - Lecture 7: Myelin, Kidney Stone Disease, Cholecalciferol

• School: University of Manitoba
• Department: Human Nutritional Sciences
• Course: HNSC 1210
• Professor: Kristin Hildahl-Shawn

Document Summary

Describe the characteristics of the two classes of vitamins; Vitamins are organic compounds that are vital to life and indispensable to body functions. They are only needed in minute amounts, and are non- caloric, essential nutrients. Fat soluble vitamin a, d, e and k: the fat soluble vitamins are vitamins a, d, e: the fat soluble vitamins dissolve in lipid and require bile for absorption. They are absorbed into the lymph and travel through the blood with protein carriers. They can be stored in the liver or with other lipids in fatty tissues and can build up to toxic amounts. Because fat soluble vitamins can build up to toxic levels, we want to use caution with fat soluble vitamin supplements. These vitamins dissolve in water, so they are absorbed directly into the blood stream where they travel freely. Most are not stored in the tissue to any great extent and excesses are excreted in the urine.