XII. Reproduce the whole sentence from the text

1. ... are carried by ...

2. ... is removed from ...

3. ... is excreted from ...

4. ... is propelled along by ...

5. ... is completed in ...

6. ... are absorbed by ...

XIII. Complete the sentences

1. The digestive process is completed in ...

2. Enzymes from the pancreas ...

3. Bile, made by the liver and stored in the gall bladder, ...

4. Bile helps ...

5. The digested food particles are ...

6. Villi on the walls of the small intestine ...

7. The digested particles are then carried by the bloodstream to ...

8. Eaten material that can not be digested as food ...

9. Water is removed ...

10. The waste material ...

11. Food is propelled along ...

12. Food moves ...

13. There are sphincters at ...

14. Disorders of the intestinal tract ...

XIV. Choose the right preposition

1. Enzymes (of, from) the pancreas mix with enzymes (of, from) the duodenum.

2. Bile helps (in, by) the digestion of fats.

3. The digestive process is completed (in, into) the small intestine.

4. The digested food particles are then absorbed (through, by) the lymph or blood vessels (in, on, into) the intestinal wall.

5. The food moves (in, into) one direction only.

6. The digested food particles are then carried (through, by) the bloodstream (to into) the liver which converts them (to, into) substances needed (by, to) the body.

XV. Answer the questions

1. Where is the digestive process completed?

2. What is the main function of the small intestine?

3. What is the small intestine like?

4. What happens in the small intestine?

5. What helps in the digestive process?

6. What is bile? By what is it made? What is the function of bile?

7. Where are the digested food particles absorbed?

8. What is the function of tiny finger-like projections?

9. What kind of material cannot be digested as food?

10. What organ converts the digested particles into substances needed by the body?

11. What is removed from the liquid waste in the large intestine?

12. What is the role of bacteria in the large intestine?

13. The food moves in one direction only, doesn’t it?

14. What prevents the food from moving backward?

15. How is food propelled along in the stomach and intestines?

16. Through what is the waste material excreted?

17. How long is the large intestine?

18. What is called peristalsis?

19. In what places are there the sphincters?

20. What disorders of the intestinal tract do you know?

21. Why does bile stagnate in the gall bladder?

22. When can gallstones form?

23. What disorder of the digestive system must be treated surgically?

XVI. Speak on the following topics

The functions of the small intestine: to complete, to mix, bile, to store, to enter, to help, to absorb, to increase, the surface area, to carry, to convert.

The role of the large intestine: plant fiber, water, bacteria (pl.), to excrete.

Peristalsis: to propel along by, one direction, sphincters, to prevent ... from;

there are sphincters at ...