Standard Science Primary 5 Systems

Which of the following correctly describes the movement of blood from the lungs to the heart and then to the rest of the body?

A Rich in oxygen -> Heart -> Rich in oxygen
B Rich in oxygen -> Heart -> Rich in carbon dioxide
C Rich in carbon dioxide -> Heart -> Rich in oxygen
D Rich in carbon dioxide -> Heart -> Rich in carbon dioxide
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Worked Solution

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

Correct answer: Rich in oxygen -> Heart -> Rich in oxygen

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