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Digest/Sys

Digestive System

QuestionAnswer
Usable portions of food Proteins, Fats, Carbohydrates, Vitamins Minerals and Water Calories needed by person depend on size, build and age. NUTRIENTS
Build and repair body parts Amino acids building blocks of proteins 12 are made in the body - 8 essential acids from your diet PROTEINS
Starches and sugars provide energy CARBOHYDRATES
Energy source, protects organs, insulate body FATS
Small amounts regulate growth and normal body functions VITAMINS AND MINERALS
Body is 50% to 60% Needed for chemical reactions, transports nutrients. Maintain body temperature. WATER
Break down food into nutrients Chemical- Enzymes and gastric juices break down food Mechanical- physical breakdown, chewing FUNCTION OF DIGESTION
Mouth- salivary glands release ptylin (an enzyme) Tongue- taste buds: sweet, sour, bitter, and salty Teeth- canines, incisors, and molars PATH OF FOOD
Flap that closes over windpipe EPIGLOTTIS
Food tube, mucus, and peristalsis move food down ESOPHAGUS
Gastric juice released (Pepsin, Hydrochloric acid, mucus) Chemical and Mechanical digestion STOMACH
Peristalsis action, six meters long Intestinal juices released, some from liver and pancreas Nutrients absorbed by villi, pass to blood vessels SMALL INTESTINES
Created by: 1126811168
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