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Air,Respiratory and Circulatory system (Circulatory system (Parts (Blood…

- - - - Pathway to allow blood to flow through
    - - Pumps blood to all parts of the body
    - - Contain digested food, oxygen and water
- - - - Transport oxygen to the lungs and carbon dioxide to the nose
    - - Allows gaseous exchange to take place
    - - Breathes in oxygen and breathe out carbon dioxide
- - - - It enters the lung through the windpipe
        
        Circulatory system
        
        Air enters the circulatory system through the air sacs in the lung
        
        Blood carries air to the heart.
        
        Blood continues to flow to other parts of the body with air
        
        Air returns to the heart and subsequently the lungs
        
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