| A | B |
| circulatory system | transport oxygen, nutrients, and waste through the body in the blood. |
| digestive system | This system provides nutrients your cells need to produce energy. First it breaks down food into nutrients then it gets the nutrients into your blood. |
| teeth | chew food breaking it into smaller pieces |
| Salivary glands | soften and moisten food |
| Tongue | pushes small ball of food to the back of the mouth |
| Esophagus | a long tube that leads to the stomach |
| Stomach | where the wall releases digestive juices containing enzyme to break down protein |
| Small intestine | continues to break down food into nutrients to be absorbed into the blood through the villi |
| Liver | This organ produces bile and stores it in the gall bladder. Bile is used to break down fat in food in the small intestine. |
| Pancreas | produce enzymes that flow into the small intestine to break down proteins, fats, and carbohydrates |
| Large intestine | removes water and form solid waste |
| Rectum | collects solid waste and release it from the body through the anus |