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Warm Up

Warm Up. Define the following terms: Digestion Absorption Peristalsis Saliva Gastric juices Villi Glycerol Diglycerides Metabolism. Digestion and Absorption. Digestive Tract. Mouth Esophagus Stomach Small intestine Large intestine Anus. Mechanical Phase. Begins in mouth

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Warm Up

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  1. Warm Up • Define the following terms: • Digestion • Absorption • Peristalsis • Saliva • Gastric juices • Villi • Glycerol • Diglycerides • Metabolism

  2. Digestion and Absorption

  3. Digestive Tract • Mouth • Esophagus • Stomach • Small intestine • Large intestine • Anus

  4. Mechanical Phase • Begins in mouth • Teeth break down food • Peristalsis- pushes food through digestive tract

  5. Chemical Phase • Begins in mouth • Mixed with saliva • Breaks down starches • Stomach- gastric juices • Sight, smell, taste • Meal leaves stomach 2-3 hours • 1st- carbs • 2nd- proteins • 3rd- fats

  6. Small intestine: Intestinal and pancreatic juices, bile break down food • Large intestine: Where indigestible residue, waste, and water move to • Excrete as feces

  7. Absorption • Water, alcohol, simple sugars absorbed from stomach • Villi line small intestine • Carbs- monosacs • Fats- fatty acids and glycerol • Proteins- amino acids

  8. Metabolism • After body absorbs nutrients: • Growth • Carry out bodily processes • Release energy • Convert to heat • Carbs- energy, glycogen, fat • Fat- fuel • Protein- cell growth, energy

  9. Basal Metabolism Rate (BMR) • Amt energy needed to stay alive • Heat given off at physical, digestive, and emotional rest • Body size • Age • Health

  10. BMR • More body surface area = higher BMR • Children + adolescents = higher BMR • Rapid growth • >20, BMR slows • Adrenaline- increases BMR • Physical activity

  11. Calculating Calories • Energy value of food • Carbs- 4 kcals/g • Fat- 9 kcals/g • Protein- 4 kcals/g

  12. Milk Fat- 8g Carbs- 12g Protein- 2g Bread Fat- 3g Carbs- 20g Protein- 1g Calculating Calories

  13. Cornbread 40 kcals How many grams CHOs? Doughnut 180 kcals How many grams fat? Calculating Calories

  14. Calculating Percentages • Used to find what percentage of total calories come from a specific nutrient • Granola Bar • 157 Calories • CHO: 88 calories • Fat: 45 calories • Protein: 24 calories

  15. Warm Up • List the items you had for dinner last night. • Find the amount of fat, carbohydrates, and protein for each item. • Calculate the calories for each nutrient. • Calculate the percentages for each nutrient. • Show your work.

  16. Parts of a Nutrition Facts Label • Serving size • Servings per container • Calories per serving • Nutrient amounts • Daily Values • Percent Daily Values

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