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Unit 3:Resp + Digest
Unit 3: Respiratory & Digestive Systems
| Term | Definition |
|---|---|
| Mouth | This is where digestion starts; teeth chomp food into smaller pieces |
| Salivary Glands | Produce saliva |
| Esophagus | Connects the throat to the stomach |
| Stomach | Contains acid that dissolves food and kills harmful bacteria |
| Small Intestine | Absorbs the nutrients from the dissolved food |
| Large Intestine | Soaks up salt, water, and minerals from the leftovers |
| Rectum | Stores feces until it is ready to exit the body through the anus |
| Liver | A chemical processing factory that gets rid of toxins, makes bile, recycles old blood cells, makes digestive juices, and stores and makes sugar |
| Gallbladder | Stores bile until it goes to the small intestine |
| Pancreas | Makes enzymes that help digest your food, and makes insulin to control blood sugar levels |
| Appendix | Might store good bacteria that help us digest our food |
| Pharynx | Throat |
| Trachea | Carries air from the pharynx to the bronchi in the lungs |
| Bronchi | Take air from the trachea to the left and right lungs |
| Alveoli | Tiny air sacs in the lungs where oxygen and carbon dioxide are put in and taken out of the capillaries |
| Bile | Chemical produced by the liver that helps your body break down fats |
| Enzyme | Special chemicals that help your body break down food |
| Pepsin | Enzyme in the stomach that helps break down food, especially proteins. Can work in the stomach acid. |
| Villi | Located in the small intestine; absorb nutrients and transfer them to the bloodstream; increase the surface area of the small intestine |