Which of the following contributes to protecting the eyes from microbial invasion?
A) tears contain lysozyme and salt.
B) a mucus layer traps and removes microbes.
C) tears mechanically flush particles from the eyes.
D) tears contain lysozyme and salt and mechanically flush particles from the eyes.
E) tears and mucus combine to trap microbes and remove them.

Question

Quizplus · Accepted Answer

Tears contain lysozyme and salt which have antimicrobial properties and also mechanically flush particles from the eyes. While a mucus layer also helps to trap and remove microbes, it is not the only factor contributing to protection from microbial invasion. Therefore, option E is not the best choice. Option A only mentions tears but does not include the mechanical removal of particles. Option C only mentions the mechanical removal of particles but does not include the antimicrobial properties of tears. Therefore, option D is the best choice as it includes both factors.

Which of the Following Contributes to Protecting the Eyes from Microbial