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Digestive system
chapter 15
| Question | Answer |
|---|---|
| what are the 6 nutrients needed by the body | carbohydrates, fats, proteins, vitamins, minerals, water |
| what are complete proteins | foods that contain all the essential amino acids |
| what are incomplete proteins | foods that are missing one or more essential amino acids |
| what are the roles of fats | They provide energy, form parts of the cell membrane, and protects internal organs |
| which nutrients are made up of amino acids | proteins |
| which carbohydrates help your digestive system function even though you cannot digest them | fibers |
| which nutrients are not made of living things | minerals |
| how much water should the human body have daily | two liters |
| how much of the human body's weight is made up of water | 65% |
| which nutrients is needed for all body processes to take place | water |
| what is perspiration | chemically dissolved water |
| where does your body get its energy from | food |
| what are calories | small units in which the amount of energy released from the body is measured |
| the number of______that you need depends on your size,age, and level of activity | calories |
| how many calories are used daily based on the standard Percent Daily Value | 2000 |
| a calorie is a unit used to measure_______ | the amount of energy released from the body |
| the Food Guide Pyramid indicates how many servings from each food group should be eaten_______ | daily |
| according to the food guide what foods should be eaten least and be limited | fats, oils, and sweets |
| food label list ingredients according to their | weight/amount |
| what is digestion | the process in which food is broken down into nutrient molecules |
| list three functions of the digestive system | breaks down food into molecules, molecules are absorbed into the bloodstream, wastes are eliminated from the body. |
| what substance in your mouth contains enzymes that begin chemical digestion | saliva |
| what are the two acids in the stomach | pepsin and hydrochloric acid |
| what protects the stomach from acid burning through it | mucas |
| what structure enables the small intestine to absorb nutrients | villi |
| what is peristalsis | involuntary waves of muscle contraction |
| where does most chemical digestion happen | the small intestine |
| what organ produces bile | the liver |
| whats the epiglottis | a flap of tissue that prevents food from going into the lungs |
| whats the role of the large intestine | it absorbs water into the bloodstream |
| what does the esophagus do | it connects the mouth to the stomach |
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noaholguin
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