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Oxygen entering the lungs of a healthy body.
Blood Flow in the Arteries
Arteries transporting oxygen-rich blood around the body
The Right side of the heart pumping blood to the lungs to collect oxygen.
Stale blood in veins
Stale blood being transported by the veins back towards the heart.
Oxygen filling the alveoli and then passing into blood vessels, which carry the oxygen to other cells around the body.
(Gordon Museum/Wellcome Images )
Using Curriculum Units
8B – Respiration
9B – Fit and healthy