If we press tongue against the palate we can recognize taste easily.
The tongue consists of tiny papillae with openings. Inside the openings, there are hundreds of taste sensitive cells. When the food is placed on the tongue, the food particles dissolve into the saliva and enter the openings. By pressing the tongue against the palate, we ensure the dissolved food getting into the openings quicker and hence we can taste the food much quickly and easily.
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