Advanced Science Primary 5 Systems

Which of the following correctly describes the movement of oxygen in our body?

A Lungs -> Heart -> All parts of the body
B Heart -> Lungs -> All parts of the body
C Lungs -> All parts of the body -> Heart
D All parts of the body -> Lungs -> Heart
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Worked Solution

Step 1: Oxygen enters the blood in the lungs. Step 2: Oxygen-rich blood travels to the heart. Step 3: The heart pumps this blood to the rest of the body.

Correct answer: Lungs -> Heart -> All parts of the body

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