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RESPIRATORY SYSTEM (Air (Nitrogen (78%), Oxygen (21%), Carbon dioxide,…
RESPIRATORY SYSTEM
Air
Nitrogen (78%)
Oxygen (21%)
Carbon dioxide, water vapour, other gases (1%)
Parts of System
Nose
Tiny hairs
Filter dust away
Windpipe
Lungs
Breathing
Breathe
in
Exchange of gases
Less carbon dioxide
Less water vapour
Less heat
More
oxygen
Enters blood
Diaphragm moves down
Chest space/volume
increases
Air
enters
lungs
Breathe
out
Exchange of gases
More
carbon dioxide
Removed from blood
Diaphragm moves
up
Non-humans
Fish
Gills
Filaments
Increased surface area
Exchange of gases
Plants
Stomata
Open
Photosynthesis
Carbon dioxide taken in
Oxygen give out
Close
Hot weather
Less water loss