Digestive System Extra Questions

 1. Digestion is the breakdown of naturally occurring foodstuffs into ......... form.

2. An enzyme is a ........ .

3. An enzyme gets destroyed by ......... .

4. An enzyme acts on a specific type of substance called ........ .

5. The degree of acidity or alkalinity of a solution is measured in terms of .......... .

6. Enzymes act best within a particular range of temperature called ............ temperature, which is usually between .....°C and ......°C.

7. The digestive system consists of the ............ and the ............ .

8. The alimentary canal starts with the ......... and ends at the ........ .

9. The ............ glands are associated with the oral cavity.

10. The mouth is also called ........ cavity or ......... cavity.

11. The ........ help in closing the mouth.

12. The ............ helps in manipulating the food.

13. Food is broken down into smaller bits because the smaller-bits provide a larger ................ for the .......... to act on for better digestion.

14. The teeth used for biting and cutting. 

15. The teeth used for tearing the food. 

16. The teeth which are chisel shaped. 

17. The teeth which are conical in shape. 

18. Hill-like projections on Premolars.   

19. Premolars have two hill like projections and are thus called ........... .

20. The teeth which are the principal grinders and crushers of food.   

21. Humans and mammals have different types of teeth and are thus called ........... .

22. Lizards and frogs have same type of teeth and are thus called ........... .

23. The first set of teeth consists of ........ teeth.

24. The first set of teeth is also called ......... teeth, ............ teeth or .............. teeth.

25. The formula representing the number of different types of teeth in one-half of each jaw is called .......... formula.

26. The part of the tooth exposed above the gum. 

27. The part of the tooth embedded inside the gum. 

28. The slight constriction between the crown and the root. 

29. The roots of the tooth consist of a process called ....... .

30. Premolars have ........ processes or fangs.

31. Lower molars have ......... processes or fangs.

32. Upper molars have .......... processes or fangs.

33. The material covering the crown. 

34. The hardest substance in the body. 

35. ........... forms the bulk of the tooth.