All animals need to eat FOOD to get ENERGY to live. But in order to use this food they have to break it down in a process called DIGESTION. And so , all animals have a group connected organs called the digestive SYSTEM. In humans the process of digestion begins in the MOUTH where food is CHEWED into small pieces ny teeth. The TONGUE helps by moving these pieces around. These pieces are covered by SALIVA or spit.
The saliva makes my the food slippery so that it is easier to SWALLOW. It also helps to break down the food. Once the food is swallowed , it passes through the ESOPHAGUS , which is like a gate that send food into the PHARYNX and air into the lungs. The food travels down the esophagus and into the STOMACH. Once the food is mixed with ACID and crushed some more. After spending some time in the stomach , the food goes into the SMALL INTESTINE where the NUTRIENTS are absorbed. The remaining food is called WASTE and it is pushed into the LARGE INTESTINE where it waits before leaving the body.
