| A | B |
|---|
| Digestive System | The system that takes in, breaks down, transports and absorbs food throughout the body. |
| Nutrient | A raw material the body gets from food. |
| Digestion | A process in which food is broken down into smaller nutrient molecules. |
| Mechanical Digestion | The physical breaking apart of food particles into smaller pieces. |
| Chemical Digestion | The digestion of food particles by enzymes. |
| Enzyme | Proteins that speed up chemical reactions. |
| Ingestion | The process through which food enters the digestive tract. |
| Epiglottis | A small flap of skin that stops food from entering the respiratory system as you swallow. |
| Peristalsis | One-directional muscular contractions of the esophagus. |
| Villi | Fingerlike projections in the small intestine that increase the surface area to maximize nutrient absorption. |
| Mastication | The chewing of food. |
| Bolus | Mass of chewed food. |
| Chyme | Liquid mass of food produced by the stomach. |
| Bile | Salt solution, produced by the liver, that breaks down fat. |
| Feces | The solid waste product that remains after digestion is finished. |
