Every human needs the air that contains oxygen for breathing. Without it, we will not life and we can not do our daily activities but have you ever thought about the process of respiration?
First, the air enters through our nose. In the nose, it will be warmed by mucus membrane and it also will be cleaned by the soft hairs in the nose. After that, it flows through the throat, larynx, and trachea. And if there’s a strange thing which is brought by the air, it will be refused by a web which is located in trachea. Then, the air flows through a branch of bronchus called bronchioles. The last, it enters into a branch of bronchioles called Alveolus. Alveolus is collection of the lung’s bubble an it’s a place were the change between oxygen and carbon dioxide happens.
That’s the process of respiration that we do all the time because we are the living creature.
Angin Semarang Satu Enam Nol Empat Duaribu Sepuluh,
Rufiah Ning Asriati
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