Standard Science Primary 5 Systems

Which of the following correctly describes the flow of blood that is rich in oxygen?

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

Step 1: Blood picks up oxygen in the lungs. Step 2: Oxygen-rich blood returns to the heart. Step 3: The heart pumps this oxygen-rich blood to the rest of the body.

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

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