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The main function of the digestive system is to break down food and absorb nutrients from it. This process begins in the mouth, where food is chewed and mixed with saliva. It then travels down the esophagus and into the stomach, where it is further broken down by stomach acid and enzymes. From the stomach, food enters the small intestine, where most of the nutrient absorption takes place. The small intestine is lined with tiny finger-like projections called villi, which increase the surface area for absorption. Nutrients are absorbed into the bloodstream and transported to the cells of the body for energy and growth. The remaining undigested food then moves into the large intestine, where water and electrolytes are absorbed. The waste products are formed into stool and stored in the rectum until they are eliminated from the body through the anus. The digestive system also includes accessory organs such as the liver, gallbladder, and pancreas. The liver produces bile, which helps break down fats, and the gallbladder stores and releases bile into the small intestine. The pancreas produces digestive enzymes that are released into the small intestine to further break down food. Overall, the digestive system plays a crucial role in providing the body with the nutrients it needs for energy, growth, and repair.
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