Which of the following is the most common route of lower respiratory tract infection?
A) Aspiration of oropharyngeal secretions
B) Inhalation of microorganisms
C) Microorganisms spread to the lung via blood
D) Poor mucous membrane protection

Question

Quizplus · Accepted Answer

Aspiration of oropharyngeal secretions is the most common route of lower respiratory tract infection; thus the nasopharynx and oropharynx constitute the first line of defense for most infectious agents.The other options are not common routes of lower respiratory tract infections.

Which of the Following Is the Most Common Route of Lower