Midterm 1 Review Slides 2011

Midterm 1 Review Slides 2011 - NUTRITION 10 Midterm#1...

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1 N UTRITION 10 Midterm #1 Review Notes Outline 1. Some basics 2. Digestion/ Absorption 3. RDA 4. Energy in Foods & Energy Requirements 5. Proteins 6. CHO 7. Fiber Nutrient Substance obtained from food that is used by the body to promote growth, maintenance or repair of tissues.
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2 6 Major Classes of Nutrients 1. Protein 4. Vitamins 2. Carbohydrate 5. Minerals 3. Fat 6. Water 3 Basic Functions of Nutrients 1. Energy: Carbohydrate, fat and protein have potential energy that is released when chemical bonds are broken 2. Structure: e.g.Protein + Calcium to form bone 3. Regulation: e.g.Proteins help regulate body fluid balance Essential Nutrient A nutrient the body cannot make at all or cannot make in sufficient amounts relative to its needs. It must be obtained from foods. Example of essential nutrients: _____________________ _____________________
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3 Homeostasis Maintenance of relatively constant internal body environment within narrow limits to ensure normal functioning of body processes. Examples of homeostasis: _________________________ _________________________ Distribution Of Nutrients In The Body 1. Body water 55-60% (2/3 intracellular, 1/3 extracellular) 2. Fat 15-25% (Male 15%, Female 20-25%) 3. Protein 18-19% 4. Minerals 4-5% 5. Carbohydrates <<<1% 6. Vitamins <<<1% Digestion The breakdown of food into units the body can use Examples of digestion end products: Protein à ________________ Carbohydrate à ______________
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4 Digestion: Two Types 1. Physical: moving and grinding of food Mouth Esophagus Stomach 2. Chemical: enzyme breakdown Stomach Small Intestine Digestion And Absorption Pancreas: Secretes most of the digestive enzymes into the stomach/intestine Digestion occurs primarily in the: Stomach (Primarily PHYSICAL) Small intestine (Primarily CHEMICAL) Digestion And Absorption The principle site for absorption: Small Intestine Large intestine: Undigested and unabsorbed food is removed here for excretion as waste. What type of food does not get absorbed? __________________
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5 Recommended Dietary Allowances (RDA) Daily amount of nutrient considered adequate to meet the needs of nearly all healthy people, and designed to be averaged over several days Determined for protein and other nutrients Established for different age groups, gender, physiological state (pregnancy, lactation) Adjustments made for bioavailability, diet quality, losses due to food preparation Energy Physiological Fuel Value: Carbohydrate = _____ kcal/gram Fat = _____ kcal/gram Protein = _____ kcal/gram The calorie value of any given food is dependant on the number of grams of each of the energy nutrients the food contains. Note: Calorie = Kilocalorie = kcal
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This note was uploaded on 03/10/2012 for the course NUT 10 taught by Professor Roger during the Winter '08 term at UC Davis.

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Midterm 1 Review Slides 2011 - NUTRITION 10 Midterm#1...

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