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Digestive System

Gr. 7 Science Ch 11-2

nutrient substances in the foods that provide energy
nutrition science of how food effects living organisms
carbohydrate the source of all energy
protein needed of growth and repair of body cells
lipids provides stored energy
minerals regulate chemical reactions in body
vitamins needed to help your body use other nuetrients
digestion the process of breaking down food
mechanical digestion breaking down food by chewing
enzymes speeds up chemical reactions in cells
saliva watery substance produced in your mouth
peristalsis wavelength muscle contractions
amylase an emzyne in saliva
pepsin an enzyme in stomach
villi tiny, finger like projections
absorption the movement of nutrient molecules into blood vessels
Created by: Triana Silliman