Discuss the natural defenses of the respiratory tract.
Include your opinion on the adequacy of the natural defenses of the respiratory tract.
Discuss whether or not you think they are sufficient to protect the main portal of entry.
Explain your answers.
This should be a substantive response (between 75 -150 words minimum) to the topic(s) in your own words, referencing (using APA format) what you have discovered in your required reading and other learning activities.