The primary role of secretory IgA is to prevent infections in:
A) blood vessels.
B) kidneys.
C) lungs.
D) mucous membranes.

Question

Quizplus · Accepted Answer

Secretory IgA plays an important role in preventing infections in mucous membranes, where it can bind to and neutralize pathogens before they are able to invade the body's tissues. It is found in high concentrations in saliva, tears, and other bodily fluids that come into contact with these membranes. It is not involved in preventing infections in blood vessels, kidneys, or lungs.

The Primary Role of Secretory IgA Is to Prevent Infections