Question

explain the following statement "digestion begins in the mouth"

Answer 1

It only says that mechanical digestion already takes place in the mouth.

Answer 2

It tells you that digestion actually begins in the mouth and not stomach. The salivary gland in the mouth secrete saliva which contain enzyme known as alpha- amylase which start the digestion of carbohydrate. Also the chewing and lubrication of food in the mouth make digestion easier, because it make swallowing easier.