This is the answer key to a case study that is available for free at:
In this case, students learn about celiac disease . The goal is for students to understand how digestion works and how an autoimmune disease (celiac) interferes with the process. I focused on specific details of the system, like villi and absorption of nutrients across the mucosa.
This case is used as part of a larger unit on the digestive system which includes a dissection of a model specimen.
The download includes a the answer key and student version, plus a link to the student version on Google Docs for integration with Google Classroom.