The Respiratory System
Описание на Статията
Science Project - 8M
Текст на Статията
- A journey through the Respiratory System
- Once upon a time, there was an air particle that had to make a journey through the respiratory system. But what is it, and what is it for??
- The millions of cells in our body, require an important element called oxygen.
- Cells use oxygen and give off carbon dioxide, which our bodies must get rid of. This process is called respiration.
- The journey begins in the nose when you breathe in. The air is warmed and moistened, and dust particles are taken out.
- After the nose, the air travels down the throat and into a large tube. This is called the trachea or windpipe.
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