Podcast
Questions and Answers
What is the scientific name for an air sac in the lungs?
What is the scientific name for an air sac in the lungs?
Alveolus (singular of alveoli)
Why do we need to breathe out carbon dioxide?
Why do we need to breathe out carbon dioxide?
Respiration produces carbon dioxide, which needs to be removed from the body.
According to the pie charts, what is the percentage of nitrogen in inhaled and exhaled air?
According to the pie charts, what is the percentage of nitrogen in inhaled and exhaled air?
78% in both inhaled and exhaled air.
How does the breathing rate change during exercise?
How does the breathing rate change during exercise?
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What happens when you breathe onto a cold mirror, and why?
What happens when you breathe onto a cold mirror, and why?
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What happens to air when it reaches the alveolus?
What happens to air when it reaches the alveolus?
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What is the main function of the respiratory system?
What is the main function of the respiratory system?
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What structure protects the delicate lungs?
What structure protects the delicate lungs?
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Why do your lungs expand when you breathe in?
Why do your lungs expand when you breathe in?
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What is the difference in size between the left and right lung?
What is the difference in size between the left and right lung?
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