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In which one of the following options the two examples are correctly matched with their particular type of immunity?
A
Mucus coating of epithelium lining the urinogenital tract and the HCl in stomach – Physiological barriers
B
Polymorpho-nuclear leukocytes and monocytes – Cellular barriers
C
Anti-tetanus and anti-snake bite injections – Active immunity
D
Saliva in mouth and tears in eyes – Physical barriers
Detailed Solution
Cellular barriers of innate immunity are leukocytes such as polymorpho-nuclear leukocytes (neutrophils), monocytes, natural killer cells and macrophages, which phagocytose and destroy microbes.
Mucus coating is a physical barrier, while HCl, saliva and tears are physiological barriers.
Anti-tetanus and anti-snake-venom injections contain preformed antibodies, which give passive immunity.
Mucus coating is a physical barrier, while HCl, saliva and tears are physiological barriers.
Anti-tetanus and anti-snake-venom injections contain preformed antibodies, which give passive immunity.