Saliva breaking down carbohydrates.

Enzymes break down food nutrients.

Water being absorbed in the large intestines.

Food is mixed together.

Your stomach mixes acid and enzymes with the food to break down protein in the pizza.

Your esophagus is a tube that moves the food from your mouth to your stomach.

Peristalsis: a series of wave-like muscle contractions that moves food to different processing stations in the digestive tract.

Acid secretion.

Enzyme action.

Enzymes break down starch into simple sugars.

The walls of your stomach contract to turn the food from a solid to a thick liquid.