Lesson: Absorption and Defecation Biology • Second Year of Secondary School

Students will be able to

• recall that digestion is the process of breaking down large molecules into smaller ones that can be absorbed and used by the body,
• identify the small intestine from its location in the body or description of its function,
• describe the structure of the villi and associated microvilli that line the small intestine,
• explain how the products of digestion are transported into the blood and lymph,
• recall that water absorption and defecation are functions of the large intestine,
• describe the adaptations of the large intestine, rectum, and anus for defecation.