Functions of the parts of the human breathing system
The human breathing system Click on each organ to read about its function Nose The nose is the first part of the breathing system. It has two nostrils. Air passes…
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Investigating Breathing in and out
Put each hand on the side of your chest. Then take a deep breath in. Breathe out. Repeat. Note what happens to your chest. This is what you will observe:…
Read FullThe Human Breathing System
The human breathing system Breathing involves movement of air in and out of the lungs. All animals and human beings need air to live. Breathing is very important, it involves…
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