RT Book, Section A1 Anderson, Olivia S. A1 L. GarcĂ­a, Robin A1 Wu, Yue A2 Boulton, Matthew L. A2 Wallace, Robert B. SR Print(0) ID 1182670655 T1 The Principles of Nutritional Sciences: Nutrients, Nutrition Recommendations, and Dietary Guidelines T2 Maxcy-Rosenau-Last Public Health & Preventive Medicine, 16e YR 2022 FD 2022 PB McGraw Hill PP New York, NY SN 9781259644511 LK accessmedicine.mhmedical.com/content.aspx?aid=1182670655 RD 2024/10/06 AB Food consists of nutrients, some of which are essential for the body to function on a daily basis. Digestion of food starts in our mouths, and food continues to break down as it travels from the mouth through the esophagus, stomach, and small intestine by a combination of mechanical forces and chemical reactions. Enzymes that are produced within the saliva, stomach, pancreas, liver, and small intestine target-specific chemical bonds holding complex nutrient structures together. Ultimately, those complex structures are broken down to simple nutrients that transporters along the stomach, small intestine, and large intestine can absorb into the body.