How can we model this process?
The transparent plastic bag represents the stomach which is a large muscular bag which contains hydrochloric acidit is able to churn the food, mixing it with the acid so that it can be broken down into even smaller molecules.
The food is then poured into the pantyhose, this represents the small intestine inside the body. This is where the nutrients from the foods we have eaten are absorbed.
The small intestine is well suited to digestion: its walls are thin, which facilitates the passage of food molecules into the bloodstream.
The final stage of digestion involves the large intestine which absorbs water and any remaining nutrients from the small intestine. Once this is done, the waste is then excreted from the body in the form of stool.
