HUN 2201 Lecture Notes - Lecture 10: Gastrointestinal Tract, Myoglobin, Cytochrome

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Plasma: the fluid portion of the blood; needed to maintain adequate blood volume so that the blood can flow easily throughout the body. Iron is a component of the oxygen carrying proteins in blood and muscle. Iron deficiency is listed as the most common nutrient deficiency in the world. Hemoglobin: the oxygen carrying protein found in our red blood cells; almost 2/3 of all the iron in our body is found in hemoglobin: heme: the iron containing molecule found in hemoglobin. Myoglobin: an iron containing protein similar to hemoglobin expect that it is found in muscle cells. Iron is also found in enzymes called cytochromes, that are active in the metabolism of carbohydrates, fats and proteins. Prooxidant: a substance that promotes oxidation and oxidative cell and tissue damage. Men have 500 1500 mg of iron in their body. Women have 300 1000 mg of iron in their body.

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