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WorksheetsRespiratory system
Total questions: 10
Worksheet time: 5mins
Which is not a job of the nose?
warm air
moisten air
traps particles like dust and bacteria
bring in carbon dioxide
Which is not a job of the respiratory system?
taking in oxygen
taking in carbon dioxide
moisten air
transport glucose
Lungs
Nose
Heart
Brain
Inside the lungs there are lots of little sacks called.......
Here, oxygen passes into the blood and carbon dioxide leaves the blood.
lungs
alveoli
They are two sacks protected by the ribs.
alveoli
lungs
The windpipe is also called
trachea
alveoli
When we breathe in...................enters our lungs and passes into the blood.
oxygen
carbon dioxide
Oxygen makes up ________ of the air in our atmosphere.
1 %
100 %
221 %
21 %
Nitrogen makes up _____ % of the air in our atmosphere.
50 %
98 %
78 %
20 %
We obtain oxygen from _________ around us.
water
air
fire
soil
