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Digestive System
Ch. 18
| Question | Answer |
|---|---|
| Digestion | process that breaks down food into small molecules so that it can be used by the cells. |
| Mechanical Digestion | takes place when food is chewed, mixed and churned. (in mouth & stomach) |
| Chemical Digestion | occurs when large food molecules are broken down into smaller particles. |
| Enzymes | a type of protein that speeds up the rate of chemical reactions in the body. |
| Pancreas | organ near the stomach that adds enzymes to the small intestine |
| Saliva | moistens the food so it can be swallowed easier |
| Esophagus | tube that connects the mouth and the stomach. |
| Peristalsis | waves of muscle contractions that squeezes the food through the digestive tract. |
| Stomach | muscular organ that breaks down food both mechanically and chemically. |
| Chyme | food that has become a thin, watery liquid. |
| Small Intestine | long organ where the food is absorbed into the bloodstream |
| Villi | fingerlike projections of the small intestine that allows more chyme to be absorbed. |
| Large Intestine | long organ that absorbs water from the digested food. |
| Rectum | the last section of the large intestine that holds the waste until it is eliminated. |
| Feces | semisolid waste that will leave the body after nutrients are absorbed. |
| Liver | makes bile to help break down food in the small intestine |
| Gall Bladder | stores bile that is made in the liver. |
Created by:
hubblep
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