| Brain | Responsible for thoughts, memory, speech, and the coordination of activities all over the body. |
| Heart | Pumps blood throughout the body, delivering oxygen and nutrients to the tissues and removing carbon dioxide and other wastes. |
| Lungs | Exchange of gases. Oxygen is required for the conversion of food into useful energy, and carbon dioxide, a waste product of this process, is expelled. |
| Liver | Processes nutrients absorbed by the intestine, detoxifies harmful substances, stores vitamins and iron, and produces bile, a substance necessary to digest and absorb fats. |
| Stomach | Breaks down and digests food in order to extract necessary nutrients from what you have eaten. |
| Kidneys | Remove waste from the body, form urine, help to balance fluids and electrolytes and perform other vital functions. |
| Small Intestine | Absorption of nutrients and minerals from food occurs here. |
| Large Intestine | Reabsorbs water from the undigested food material, and processes the waste material from the body. |
| Pancreas | Produces important enzymes and hormones that help break down foods and regulates blood sugar levels. |
| Spleen | Filters blood and helps the body fight infections. |
| Gallbladder | Stores and concentrates bile, which is used to help digest fats. |
