Is the normal flora of the upper respiratory tract harmful to the human host? Explain?

Update:

Also, is it beneficial? Please explain!

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  • 1 decade ago
    Favorite Answer

    Yes it is beneficial. Our normal flora is made up of millions and millions of bacteria that are not harmful to our body. They help protect us from harmful substances that we may come in contact with.

    The normal flora of the upper respiratory tract prevents bacteria in our food and air from being absorbed through the gastrointestinal walls and entering our sterile body organs. The most important is that, along with tiny hairs in our nose, throat, and esophagus, the normal flora filtrates the air that we take in and by the time it retches the aioli (witch bring oxygen into our blood cells) in our lungs the air is completely sterile.

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  • eager
    Lv 4
    3 years ago

    Respiratory Flora

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