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Digestive System
System responsible for breaking down food into nutrients for the body.
Ingestion
The act of eating or putting food in your mouth.
Digestion
Mechanical and chemical breakdown of food into smaller particles and molecules.
Absorption
Process by which cells of the digestive system take in small molecules of digested food.
Elimination
The process of expelling undigested food and wastes from the body.
Mechanical Digestion
Physical breakdown of food into smaller pieces.
Chemical Digestion
Chemical reactions that break down food into small molecules.
Enzymes
Proteins that catalyze and facilitate the breakdown of larger molecules into smaller ones.
Amylase
An enzyme that helps break down carbohydrates.
Pepsin
An enzyme that aids in breaking down proteins in the stomach.
Lipase
An enzyme that helps break down fats.
Peristalsis
Waves of muscular contractions that move food through the digestive tract.
Chyme
Watery liquid formed in the stomach as food mixes with hydrochloric acid.
Villi
Fingerlike projections in the small intestine that absorb nutrients into the bloodstream.
Bile
A substance produced by the liver that aids in the digestion of fats.
Gallbladder
Organ that stores bile until it is needed in the small intestine.
Large Intestine
Organ where waste products are moved and water is absorbed.
Diarrhea
Condition where not enough water is absorbed, causing loose stool.