Innate immunity is
A) the body's first line of defense.
B) the body's second line of defense.
C) the body's third line of defense.
D) involved with the production of antibodies.
E) associated with all of these.

Question

Quizplus · Accepted Answer

Innate immunity is the body's second line of defense, which includes physical and chemical barriers, such as skin, mucous membranes, and stomach acid, as well as immune cells, such as neutrophils and macrophages, that respond nonspecifically to pathogens. The first line of defense is considered to be external physical and chemical barriers, while the third line of defense is the adaptive immune response, which produces specific antibodies against particular pathogens.

Innate Immunity Is