Q5 of 30 Page 6

The acid present in the stomach

The acid present in the stomach is the Hydrochloric acid which is secreted by the oxyntic or the parietal cells of the stomach. They help in killing the harmful bacteria that may enter our body along with the food. With this they also make the medium acidic which further helps in protein digestion.

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3

Read carefully the terms given below. Which of the following set is the correct combination of organs that do not carry out any digestive functions?

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The swallowed food moves downwards in the alimentary canal because of

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The finger-like outgrowths of Amoeba helps to ingest food. However, the finger-like outgrowths of human intestine helps to

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Read the following statements with reference to the villi of small intestine.

(i) They have very thin walls.


(ii) They have a network of thin and small blood vessels close to the surface.


(iii) They have small pores through which food can easily pass.


(iv) They are finger-like projections.


Identify those statements which enable the villi to absorb digested food.