| A | B |
|---|
| digestion | the process by which the body breaks down food into small nutrient molecules |
| absorption | the process by which nutrients pass from the digestive system into the blood |
| saliva | the fluid released when the mouth waters that plays an important role in both mechanical and chemical digestion |
| enzyme | a protein tht speeds up chemical reactions in a living things |
| epiglottis | 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 |
| stomach | a J-shaped, muscular pouch located in the abdomen |
| small intestine | teh part of the digestive system in which most chemical digestion takes place |
| liver | the body's largest organ; it produces bile |
| bile | the substance produced by the liver that breaks up fat particles |
| gallbladder | the organ that stores bile after it is produced by the liver |
| pancreas | a triangular organ that lies between the stomach and the small intestine |
| large intestine | the last section of the digestive section, where water is absorbed into the blood and the remaining material is eliminated from the body |
| rectum | the end of the large intestine where waste material is compressed into solid form before being eliminated |
| anus | the muscular opening at the end of the rectum through which wste material is eliminated from the body |
| excretion | the process by which wastes are removed from the body |
| kidney | a major organ of the excretory system tht removes urea and other wastes from the blood |
| urine | a watery fluid produced by the kidneys that contains urea and other wastes |
| urinary bladder | a sacklike muscular organ that stores urine until it is eliminated from the body |
