1. Categorize respiratory tract diseases, their causes, and pattern of associated symptoms.
2. How are infections of the upper respiratory tract dissimilar from those of lower respiratory tract?
3. Why are infections of upper respiratory tract milder as compared to those pertaining to lower respiratory tract?
4. Discuss the curative methods for each of upper and lower respiratory tract infections.
5. Write down three specific factors which help clearing the lower lung of infectious agents.