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Which one of the following acts as a physiological barrier to the entry of
microorganisms in human body?
  • a)
    Skin
  • b)
    Epithelium of Urogenial tract
  • c)
    Tears
  • d)
    Monocytes
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Which one of the following acts as a physiological barrier to the entr...
Skin and epithelium r physical barrier and tears from eyes and saliva etc r physiological barrier.... Refer ncert.
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Which one of the following acts as a physiological barrier to the entr...
Physiological barrier to the entry of microorganisms in human body:


  1. Skin:
    Skin acts as a physical barrier to prevent the entry of microorganisms into the body. The outermost layer of the skin, known as the epidermis, provides a tough, waterproof barrier that prevents pathogens from entering the body.


  2. Epithelium of Urogenital tract:
    The epithelium of the urogenital tract also acts as a physiological barrier against microorganisms. The mucous membranes lining the urogenital tract produce mucus and other substances that help trap and eliminate pathogens before they can enter the body.


  3. Tears:
    Tears contain lysozyme, an enzyme that helps to break down the cell walls of certain bacteria. When microorganisms come into contact with tears, the lysozyme helps to kill them and prevent them from entering the body through the eyes.


  4. Monocytes:
    Monocytes are a type of white blood cell that plays a key role in the immune response. They help to recognize and destroy pathogens that have entered the body, acting as a last line of defense against infection.


In the given options, tears act as a physiological barrier to the entry of microorganisms in the human body by helping to kill pathogens before they can enter through the eyes.
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Which one of the following acts as a physiological barrier to the entry ofmicroorganisms in human body?a)Skinb)Epithelium of Urogenial tractc)Tearsd)MonocytesCorrect answer is option 'C'. Can you explain this answer?
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