Year 12s make a model of a working gut.
A Level Biology students are getting a better understanding of what happens to the food we eat, its journey from the mouth to the stomach, and how it is broken down and absorbed into our bodies.
They learnt about the importance of the liver, pancreas and gall bladder in digestion and also considered the role of the small intestine. The next step, in a practical exercise, was to make a model of a gut using Visking tubing.
The girls observed the properties of the tubing – a smooth membrane with small holes that allow water and small molecules through – and compared it to a gut.
They put starch suspension and glucose solution into the model, left it in a water bath and then carried out chemical tests to determine whether starch and glucose had passed through the gut replica to be taken away to other parts of the body.