FOOD 3090 Study Guide - Quiz Guide: Red Blood Cell, Food Processor, Reference Daily Intake
6 Dec 2015
School
Department
Course
Professor
Document Summary
Nutrient digestion and utilization lectures 2 and 3: distinguish between the terms: food, nutrient, and. Food: any nutritious substance that people or animals eat or nutraceutical. drink in order to maintain life and growth. Nutrient: a substance that provides nourishment essential for growth: macro-nutrient molecules: carbohydrates, lipids, micro-nutrient molecules: vitamins, minerals. Ingestion- chewing/mixing with saliva involves the mouth. Digestion- chemical breakdown of large molecules involves the stomach, small intestine, large intestine. Chyme" produced by acid & gastric juice (peptic. Acid-reflix may occur if too much acid. Mucus protects stomach lining from digestion- non active pepsinogen. Secretions (pancreatic, bile, and intestinal juices) and hydrolysis allow further breakdown. Emulsification of fats by bile, enzymatic breakdown of fats. Brake- feedback mechanism to control gastric emptying. Fat soluble molecules via lymphatic system through thoracic duct to body. Metabolism- utilization of the small molecules for energy. Anabolic processes- used energy to build molecules.
