Discussion 6.1 – Natural Defenses of the Respiratory System

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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. 

Discussion Expectations:  

The minimum requirements for class discussions are to respond directly to the discussion prompt and to respond to at least two other posts, by other students or the instructor, by the end of the week. The discussion will close on the due date and will NOT be reopened for a late submission.