Digestive system

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  • The Digestive​ System
  • The mouth is the first step of digestion. The food enters, where mechanical digestion happens as the food is torn apart by the teeth. Chemical digestion happens as the food is mixed with saliva, which begins the process of the food being broken down. The food is then taken to the back of the mouth, where is it swallowed and goes down the esophagus.
  • The esophagus is the second step of the digestion system. The esophagus serves as a mover of food, saliva, and substances between the mouth and the stomach.When swallowed, the food travels down the esophagus and to the stomach. The food enters the stomach. The stomach is important in digestion. Gastric glands in the stomach's lining release gastric acids (ex: hydrochloric acids and enzymes). These acids then start breaking down the food. After the food is broken down, it is now in a liquid like stage called "chyme". The food exits the stomach and heads for the liver.
  • The liver produces bile, which is stored and given to the food from the gallbladder. The bile assists in breaking down the food further and also helps absorb fat. The chyme goes to the pancreas. The pancreas is in charge of making chemicals that help take proteins, fats, and carbohydrates and give them to the body. It acts like a fuel.
  • The small intestine is the second to last step of the digestion system. The small intestine has three parts, the duodenum, jejunum, and ileum. The small intestine also has small structures called villi. The villi take in nutrients for the body.
  • The large intestine is the last step of the digestion system. It gives water to the bloodstream, which takes in away. It also takes the undigested food and turns it into feces, where it exits the body.
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