2. Your digestive system is uniquely designed to turn the food you eat into energy your body needs to survive. Here's how it works. Mouth The mouth is the beginning of the digestive tract. In fact, digestion starts here as soon as you take the first bite of a meal. Chewing breaks the food into pieces that are more easily digested, while saliva mixes with food to begin the process of breaking it down into a form your body can absorb and use.

3. The primary function of the digestive system is to break down the food we eat into smaller parts so the body can use them to build and nourish cells and provide energy. The digestive system is a series of hollow organs joined in a long, twisting tube from the mouth to the anus. Inside this tube is a lining called the mucosa. In the mouth, stomach, and small intestine, the mucosa contains tiny glands that produce juices to help digest food

4. Parts of the System Parts of the system are the mouth, including the teeth, tongue and salivary glands; the pharynx; the esophagus; the stomach; the small and large intestines; and the accessory organs, which include the gallbladder, liver and pancreas

5.  The human digestive tract takes in food in various forms, extracts from this food source the nutrients that the body turns into energy, and then excretes the waste products. The stomach is where food is broken down by gastric acid and digestive enzymes after it comes down the esophagus. Digestion of food takes place mainly in the small intestine, where vitamins and nutrients are absorbed. It then passes through the large intestine, which compacts the waste and stores any water left over from the small intestine. Waste is finally gotten rid of through the anus at the end of the digestive system after being stored in the rectum. Other organs such as the liver, pancreas and gall bladder are instrumental in secreting and storing substances that aid in the