State TWO roles of the tongue in digestion process

b) Quinine is economically important as an antimalarial drug, used to treat malaria.

22. a) State the differences between herbivores and carnivores in terms of the following dental features:

Dental Feature	Carnivores	Herbivores
Canine	Long, sharp, pointed for tearing flesh	Reduced or absent, or blunt for grinding
Carnassial Tooth	Well-developed, sharp for shearing meat	Absent
Molar	Sharp, pointed for crushing bones	Broad, flat, ridged for grinding plants

23. Name the nutrient important in the following: i) Impulse transmission: Sodium (or Potassium) ii) Haemoglobin formation: Iron

24. State TWO roles of the tongue in the digestion process:

    • It mixes food with saliva to form a bolus.
    • It pushes the bolus towards the pharynx for swallowing.