HELP NOW! What happens during the process of digestion?

As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules. The body then absorbs these smaller molecules through the walls of the small intestine into the bloodstream, which delivers them to the stomach

Food contents that the animal or creature has swallowed goes into the stomach. The contents gets broken down. The energy from the contents will then go through the body.

i do not get it   at all