Nova decided to visit her city's annual carnival fair and on the way, grabbed some sushi. She used her mouth, teeth, and saliva to chew and break down the food.
Once the sushi is chewed and broken down, it is pushed by the tongue into the esophagus. The esophagus pushes the food down into the stomach by an action known as peristalsis, which are contractions.
The stomach breaks down the food physically, with contractions, and chemically, with enzymes and acids.
Next up on the digestive adventure, comes the small intestine. Just like the stomach, the small intestine contracts and secretes enzymes that break down the food and absorbs the resulting nutrients.
Of course not everything will break down so now it´s up to the large intestine to save the day. In the large intestine, bacteria that live there decompose carbohydrates that were not digested by the small intestine. This process produces intestinal gas.
The remaining state of the food has now become feces, or poop. It travels to the rectum, which is the end of the colon, and leaves your body through the anus. Happy pooping!