Standard Science Primary 5 Systems

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

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

Step 1: Blood pick 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 -> Rest of the body

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