Q11 of 51 Page 161

Is there any reason for the intestine to be coiled with many folds? In what way it is helpful during the process of digestion? (AS1)

The intestines are coiled with many folds so that it is able to retain the digested food for much longer time in order to absorb all the nutrients from it. The more the food stays, the longer time it gets for the nutrients to be absorbed by the villi present on the walls of the intestine.


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9

What is mastication? Explain the role of different sets of teeth in this process. (AS1)

 10

During the journey of food from mouth to stomach through oesophagus, how does muscular system coordinate in this process? (AS1)

 12

What is the function of peristalsis in these parts? (AS1)

A. oesophagus B. stomach


C. small intestine D. large intestine

 13

How can you justify the enteric nervous system as the second brain of the gut? (AS1)