Fouzia S.

Summary Salivary glands are the first organ in digestive tract to react for food on any kind of fragrance of eatables, after we saw or smell for food. Food is physically digested in mouth, means no acids are there, it is simply crushed into small pieces. When the food is kept in mouth, it is crushed by teeth, roll over by tongue and soften by saliva. By passing through all these three organs food becomes moist and small enough to digest. After this process the food is called bolus/Bolus is the