Lesson 8 What does the surface of M'Kenna's small intestine look like up close compared to a healthy one?
Lesson 6 Question What happens to different substances in food as it travels through the digestive system?
Lesson 5 Question Why do large food molecules, like some complex carbohydrates, seem to disappear in the digestive system?
Lesson 4 Question What happens to food molecules as they move through the small intestine and large intestine?