| Term | Definition |
| 3 functions of the digestive system | breaks down food, molecules are absorbed, wastes are eliminated |
| digestion | your body breaks down food into small nutrient molecules |
| absorption | nutrient molecules pass through the wall of your digestive system into your blood |
| saliva | fluid released when your mouth waters |
| mechanical digestion | teeth do the work by chewing |
| enzyme | a protein that speeds up chemical reactions in the body |
| epiglottes | a flap of tissue that seals off the windpipe and prevents food from entering |
| esophagus | a muscular tube that connects the mouth to the stomach |
| mucus | a thick slippery substance produced by the body |
| peristalsis | involuntary waves of muscle contractiong |
| stomach | a j-shaped muscual pouch located in the abdomen |
| pepsin | chemically digests the proteins in your food breaking them down into amino acids |