The skin and bodily secretions provide the first line of defense against infection. One response in this category that is common during upper respiratory virus infections is:
A) Production of antibodies
B) Infiltration by white blood cells
C) Mucus production
D) Increased saliva production
E) Fever

Question

Quizplus · Accepted Answer

Mucus production is a common response to upper respiratory viral infections as it helps trap and prevent further spread of the virus within the respiratory tract. Mucus also contains immune system components that can help fight off the infection. The other options listed may also occur during infections but are not specific to the first line of defense.

The Skin and Bodily Secretions Provide the First Line of Defense