When you eat food your body does an incredible task that is very important for us humans in order to live. It all starts in the mouth. When food is chewed in the mouth, teeth break it into smaller pieces. The salivary glands are glands in the mouth the release saliva, which contains a chemical that begins the digestion of carbohydrates.
Then from your mouth, your food travels down the esophagus. The esophagus is a tube the connects the mouth and the stomach. Food passes to your stomach by the process of peristalsis peristalsis is a series of involuntary muscle contractions.