A detailed resource covering the dietary and digestive biochemistry and physiology. Human beings need to eat a balanced diet to stay healthy. The food we eat has to be broken down before it can be used by the cells of the body. This is the job of the digestive system which is made up of many different organs working together. It takes in food, breaks it down both physically and chemically, moves the digested food into the blood stream and removes the undigested waste. This resource explores the digestive system in detail.