e) Urination increases when we take lot of fluids
f) The process of digestion goes on in a person whose central nervous system has been largerly affected

7. Write difference between the following.
a) bolus - chyme b) small intestine - large intestine c) mastication - rumination d) propulsion - retropulsion

8. How can you say that mouth is a munching machine?

9. What is mastication? Explain the role of different sets of teeth in this process.

10. During the journey of food from mouth to stomach through oesophagus. How does muscular system coordinate in this process?

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

12. What is the function of peristalsis in these parts?
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?

14. Rajesh feels hungry upon seeing food.Sheela says no to food as she is not hungry.What makes Rajesh hungry and what suppresses Sheelas hunger?

15. How are taste and smell related?

16. List out the sphincter muscles of the food canal you have observed and give a brief description?

17. What experiment should you perform to understand action of saliva on flour? Explain it's procedure and apparatus that you followed.

18. What happens if salivary ducts are closed?

19. If size and shape of small intestine is like oesophagus what will happen?

20. Prepare a questionnaire to understand nervous coordination in digestion process.

21. Suggest a simple experiment to prove the role of palate in recognizing taste.

22. Collect information related to feeling hunger from your school library and prepare a note on it.

23. Draw the block diagram showing sensation of taste from food material to brain.

24. Draw a neatly labled diagram showing a peristaltic movement in oesophagus. Explain the importance of mucus on the walls of food pipe.

25. Draw a schematic diagram of villus in small intestine. Explain how digestive system coordinate with circulatory system.

26. The mere smell or sight of food stimulates hunger .Describe the process through a neat diagram?

27. With the help of a diagram show the movement of food from mouth to the stomach.What muscles and nerves are involved in the movement of food and what is this action called as

28. Prepare a cartoon on Pavlov's experiment with a suitable caption.

29. How do you appreciate stomach as a churning machine .How does this coordination go on?

30. There is a great variety in diversified life processes, express your feelings in the form of a poem.

Suggest any two important habitual actions to your friend while eating food, keeping in view of this chapter.(AS7)