Digestion in the Mouth
The mouth receives food. The tongue serves in swallowing, manipulating the food for chewing and in perceiving taste. The teeth mechanically subdivide the food for easier digestion. Then, there are the salivary glands. There are three pairs of salivary glands namely parotid, submaxillary and sublingual which secrete the colourless viscous fluid called 'saliva'. Saliva helps in swallowing the food by lubricating the food and the neutral pH of saliva prevents the decalcification of teeth