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8Sci CH11

8th Science CH11 Fueling the Body

TermDefinition
digestion mechanical and chemical breakdown of carbohydrates, fats, and proteins into smaller molecules that can be absorbed by the cells
enzymes protein molecule controlling the rate of different body processes; humans have over 700 enzymes that are an essential part of chemical digestion and break nutrient molecules into smaller molecules
minerals inorganic compounds essential for good health; needed by the body to regulate chemical reactions
nutrients substances in food that are needed by the body for growth, development and repair
peristalsis smooth, muscular waves of contractions that move food through the esophagus, into the stomach, and through the entire digestive system
villi tiny finger-like projections lining the folds of the small intestines
vitamins organic nutrients needed in small amounts by the body for good health, may be water-soluble or fat-soluble