a) The mouth is the place from where the food enters the digestive tract. Here the food is bitten, chewed and grinded into smaller form with the help of teeth.
b) There are four different sets of teeth present in the mouth having different functions.
c) The surface muscles of the jaw help in biting and grinding actions, and moving the jaw in all directions for proper mastication of food.
d) There are salivary glands present that secrete saliva. The tongue helps in properly mixing the grinded food with saliva to form a slippery concoction known as bolus.
e) Hence, we can say that the mouth is a munching machine.
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