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Why do we say 'bless you' or 'gesundheit' when people sneeze?
Many of us offer a blessing when someone sneezes, and we don't even know why. Why does a sneeze get a "bless you" when a cough goes unanswered?"
RESPIRATORY SYSTEM
The respiratory system includes the nose, throat, larynx, trachea, bronchi, and lungs. Discover how the respiratory system supplies blood with necessary oxygen and relieves it of the waste product carbon dioxide.
How much do you know about the human body?
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How does the respiratory system defend itself?The respiratory system has several ways to defend itself, including cilia fibers. Learn more about how the respiratory system defends itself from this article. See more »
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How much oxygen does a person consume in a day?
You breath all day, every day. How much oxygen does this process consume? See more »
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What are some facts about the respiratory system?
Here are some facts about the respiratory system, the group of tissues and organs in your body that enable you to breathe. Learn some facts about the respiratory system in this article. See more »
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What are the respiratory system organs?
The respiratory system organs include the airways, the lungs, and the blood vessels and muscles attached to them. Learn what the respiratory system organs are in this article. See more »
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What is the function of the respiratory system?
The function of the respiratory system is to bring oxygen to all the parts of your body. Learn what the function of the respiratory system is in this article. See more »
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