by Robert Hardiman
The digestive system is a long tube that begins at the mouth. After food is swallowed, the food passes through a tube includes the stomach and the intestines. The food is ground and mixed with digestive juices, that have chemicals in them that help break down the food. When the tiny bits of food go into the stomach, they are churned to break them down even more. Then the food bits go into the small intestine, a long tube below the stomach.
Saliva dissolves some of the chewed food and also contains a starch - digesting enzyme called amylase.
The esophagus is a muscular tube through which food passes from the pharynx . The stomach prevents the gastric juices and contents from entering the esophagus.
It is located in the interior portion of the abdominal.
The small Intestine is among a narrow folded or coiled tube extending from the stomach.
Diseases of the digestive system are: stomachaches, constipation, ulcers, and inflammatory bowel.