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7th Grade Chapter 15
Food and Digestion
| Question | Answer |
|---|---|
| calorie | a unit used to measure energy |
| mucus | a substance that coats and protects the inside of the stomach |
| pancreas | the digestive organ that releases enzymes that help break down starches, proteins, and fats in the small intestine |
| water | the nutrient that is needed in order for all body processes to take place |
| digestion | the process in which your body breaks down food into small nutrient molecules |
| peristalsis | the process that involves muscle contractions that move food through the esophagus, stomach, small intestine, and large intestine |
| food | the energy your body needs comes from |
| saliva | the substance in the mouth that contains an enzyme that begins chemical digestion |
| calorie | the amount of energy required to raise the temperature of one gram of water by one Celsius degree |
| villi | the structures that enable the small intestine to absorb large amounts of nutrients |
| proteins | the nutrients made up of amino acids |
| liver | the organ that produces bile |
| small intestine | the part of the body where most chemical digestion takes place |
| large intestine | where water is absorbed from undigested food |
| human's body weight | made up of 65% water |
| the human body normally needs in a day | 2 liters of water |
| gall bladder | stores the bile produced by the liver |
| esophagus | carries food to the stomach |
| according to the Food Guide Pyramid, which group should make up the largest part of a person's diet | bread, cereal, rice, and pasta |
| the six nutrients needed by the body are | carbohydrates, fats, proeings, vitamins, minerals, and water |
| the functions of the digestive system are | break down food into molecules the body can use; absorb food molecules into the blood; eliminate undigested wastes from the body |
| according to the Food Guide Pyramid, which group should be eaten in very limited amounts | fats, oils, and sweets |