_______ Defense Mechanisms Include Barriers That Prevent Pathogens from Entering

Question

_______ defense mechanisms include barriers that prevent pathogens from entering the body.
A) Nonspecific
B) Specific
C) Antibody
D) Cytokine

Accepted Answer

Nonspecific defense mechanisms are the first line of defense and include physical and chemical barriers, such as skin, mucous membranes, and stomach acid, that prevent pathogens from entering the body. Antibodies and cytokines are part of the specific immune response, which targets specific pathogens, while nonspecific defenses are not specific to a particular pathogen.