Question

why grinding and lubrication is necessary in swallowing

Answer 1

Explanation:

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Swallowing is the process by which food is transported from the mouth to the stomach. Functionally, it may be divided into three phases—preparatory, transfer, and transport phases—that follow each other in a sequence. Anatomically, swallowing has been divided into three phases: oral, pharyngeal, and esophageal.

Answer 2

Grinding breaks the big food particles into smaller ones for the easy transport of food from the Oesophagus. It is the first step of digestion, and it increases the surface area of foods to allow a more efficient break down by enzymes.

Lubrication helps the food to move through the oesophagus swiftly. It is the process in which saliva mixes with the food. It makes it soft. It prevents food from sticking to teeth and gums.