why are villi present in the intestine and not in the stomach????
in stomach simple sugars , water and alcohol are absorbed. but it is not possible to absorb other elements as they are in complex state from stomach to small intestine the digestion process is almost completed and the complex food molecules are converted into simpler form and are ready to be absorbed. this is why it helps villi to absorb all the efficient thing present there which were not absorbed in stomach. so if villi were present in stomach most of efficient things could not have been absorbed.
hope it helps you :)
villi has to absorb the food and send it to blood which will send digested food to all cells
in stomach food is not completely digested but in small intestine the food is completely digested , thats y villi are present in small intestine coz they want to absorb completely digested food so cells can use it to generate energy