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- 1. Multiple Choice
It is a long tube. The air goes down this tube.
bronchi
windpipe
- 2. Multiple Choice
When we breathe in...................enters our lungs and passes into the blood.
oxygen
carbon dioxide
- 3. Multiple Choice
The windpipe is also called
trachea
alveoli
- 4. Multiple Choice
When we breathe out , ................. leaves our body.
oxygen
carbon dioxide
- 5. Multiple Choice
They are two sacks protected by the ribs.
alveoli
lungs
- 6. Multiple Choice
Inside the lungs there are lots of little sacks called.......
Here, oxygen passes into the blood and carbon dioxide leaves the blood.
lungs
alveoli
- 7. Multiple Choice
They are two tubes .Oxygen enters the lungs through .......
bronchi
alveoli
- 8. Multiple Choice
When we ........................ oxygen goes down the windpipe
breathe out
breathe in
- 9. Multiple Choice
When we ................... carbon dioxide leaves our body.
breathe in
breathe out
- 10. Multiple Choice
When we breathe in , oxygen enters the body through our mouth or ............
ears
nostrils
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