a) Small intestine is specifically designed to absorb all the important nutrients from the digested food. The length and structure is totally complementary to the function it performs, i.e. absorption of nutrients from the digested food.
b) Oesophagus is much smaller in length along with the absence of villi and coils.
c) In order for proper absorption of nutrients from the chyme, the food has to be retained in the intestine for a longer period of time. The coils and folds in small instine play a crucial role in that.
d) If size and shape of small intestine is similar to that of oesophagus, the proper absorption of nutrients from the food will not take place.
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