Lecture13 - Lecture 16: Digestion Chapter 41 Animals are...

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Unformatted text preview: Lecture 16: Digestion Chapter 41 Animals are generally grouped as herbivores, carnivores, or omnivores Three nutritional requirements of all animals regardless of diet : 1. Diet must provide fuel for cellular work in the animal 2. Diet must provide organic raw materials for biosynthesis 3. Diet must provide all essential nutrients (those that animal cannot synthesis) blood glucose rises = insulin secretion by pancreas into the blood insulin enhances transport of glucose into body cells and stimulate liver and muscle cells to convert glucose to glycogen blood glucose drops = glucagon secretion by pancreas into the blood glucagon promotes breakdown of glycogen in liver and release of glucose into the blood THUS GLUCOSE undernourishment- a diet that is chronically deficient in calories (e.g., social issues, weather, anorexia) intake < energy used overnourishment- a diet that is chronically excessive in calories (obesity) intake >> energy used many hormones help regulate appetite control and may factor into obesity Can evolution be the reason I need cheeseburgers four times a week? Three nutritional requirements of all animals regardless of...
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This note was uploaded on 11/24/2011 for the course BIOLOGY 110 taught by Professor Bentz during the Spring '09 term at Drexel.

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Lecture13 - Lecture 16: Digestion Chapter 41 Animals are...

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