Do you know everything about our respiratory system?
Let's test your knowledge!
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1. What is the main organ of the respiratory system?
Lungs
Heart
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2. What gas do we inhale from the air?
1. What is the main organ of the respiratory system?
A) Heart
B) Lungs ✅
2. What gas do we inhale from the air?
Oxygen
Carbon dioxide
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3. Which part of the respiratory system connects the mouth and nose to the lungs?
Trachea
Stomach
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4. What muscle helps the lungs move when we breathe?
Diaphragm
Liver
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5. What gas do we exhale?
Nitrogen
Carbon dioxide
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6. What happens to the diaphragm when we inhale?
It moves down
It moves up
