A) Cytokine barriers
B) Cellular barriers
C) Physiological barriers
D) Physical barriers
Correct Answer: C
Solution :
Innate immunity is the resistance to infection, which an individual possesses by virtue of his/her genetic and constitutional make up. Thus, it comprises all those defence elements with which an individual is born and, which are always available to protect a living body. Physiological barriers like body temperature, pH of the body fluid, and various body secretions (saliva, tears) prevent growth, of many disease causing micro-organisms. Skin is the physical barrier of the body. Its outer tough layer the stratum comeum prevents the entry of bacteria and viruses.
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