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Human Health and Disease — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Health and Disease3 Marks
Question
Under natural immunity, how are we automatically protected from environmental germs through protective processes? ###How do innate immunity prevent the entry of external pathogenic factors? Explain.
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Answer

Due to this, it automatically gets protected from environmental germs through the following protective process-
(1) The skin continuously prevents the entry of various germs.
(2) WBC and antibodies in the blood keep destroying various toxic substances.
(3) Macrophage cells in the tissues keep eating the bacteria.
(4) HCL of gastric juice and its digestive juices keep destroying germs.

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