To provide a model of the inside of the small intestine for students who are blind or visually impaired to examine and to support their understanding of the function of villi in digestion
The structure of the small intestine is designed for absorption of nutrients. The inside of the small intestine is lined with villi that absorb nutrients from the liquid mixture called chyme produced in the stomach from the food we eat. Biology books usually have a detailed picture of the villi. Some plastic science models also show villi. However, this easy to create model more accurately presents the concept of villi in a way that can be accessed tactually and visually. Blood vessels on the outside of the intestinal wall absorb nutrients so that they can travel around the body in the blood.