human being breathe through
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human beings breathe through their nose
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Bring Science Home
Bring Science Home
How Do We Breathe?
An inhalation activity from Science Buddies
By Science Buddies, Sabine De Brabandere on May 16, 2019أعرض هذا باللغة العربية
How Do We Breathe?
In and out: Learn how physics plays a role in every breath you take. Credit: George Retseck
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Key Concepts
Biology
The body
Lungs
Physics
Air pressure
Introduction
We breathe a lot—roughly 10 times a minute! Have you ever wondered how the process of breathing works so smoothly? Our lungs allow us to inhale the oxygen our body needs, but they do much, much more. They also allow us to get rid of carbon dioxide, the waste product created in the body, and they play a vital role in singing, shouting and even giggling. In this activity you will make a model of a lung and use it to discover how air flows in and out of the lungs with ease.
Background
All cells in our body need oxygen to create energy efficiently. When the cells create energy, however, they make carbon dioxide. We get oxygen by breathing in fresh air, and we remove carbon dioxide from the body by breathing out stale air.