In this lesson, you will learn about the digestive system's anatomy. You will discover how your body processes the food and drink that you take in on a daily basis. By tracking the pathway of digestion from the ingestion of food through the breakdown of macromolecules to the absorption of nutrients and, ultimately, the excretion of waste, you should gain a better understanding of the interdependence of the body's various organ systems.

In this lesson, the following essential questions will be examined:

• How do the organs of the digestive system work together to digest carbohydrates, lipids, and proteins?
  
• In what way does the body facilitate the exchange of energy and matter from the digestive system?