NHM 101 1nd Edition Lecture 7 Outline of Last LectureI. Nutrition CalculationsII. Planning a healthy diet Outline of Current Lecture III. Secretions of digestionCurrent Lecture- Secretions of digestion are required from 5 different organso Salivary glandso Stomacho Pancreaso Gallbladdero Small intestine- Secretions bring in abundance of water and a variety of enzymes - Enzymes are proteins that facilitate chemical reaction- Identified by organ they come from and nutrient they break down- Enzyme in digestion facilitate hydrolysis - Hydrolysis is the addition of water to break down molecules into smaller pieces- ENZYMES ARE PROTEINS!- Salivary Glandso pH 7 or slightly more acidico squirt just enough saliva to moisten foodo saliva contains water, salts, mucus, and enzymeso initiates carbohydrate digestion- Stomach Gastric Juiceso Gastric glands secrete gastric juiceso Gastric juices contain water, enzymes and hydrochloric acido Stomach contents are highly acidicpH 2o Stomach walls protects itself from acid juices by secreting mucus- Small intestineo Pancreatic juice enters into digestive process in duodenumo Pancreatic juice contains enzymes that act on all three macronutrients These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.o Contains sodium bicarbonate which helps to neutralize the chyme that has entered from stomacho Chyme remains natural or slightly basic from here forward o Small intestines are the main point for digestiono Bile also enters into digestive process in duodenum o Liver continuously produces bile and it is stored in gallbladder o Bile is emulsifier(digest fat or lipids), not enzymeo Cells of intestinal wall also have digestive
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