The food passes through a number of organs in the body that together forms the alimentary canal or the digestivesystem.
The digestive system is a group of organs responsible for the conversion of food into nutrients and energy needed by the body.
With the help of secretions of various glands like salivary glands, liver, gall bladder, pancreas, etc., the food is broken down into simpler substances.
The process of nutrition in humans involves five stages:
