Standard Science Primary 5 Systems

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

A From the heart to the lungs
B From the lungs to the heart
C From the rest of the body to the heart
D From the heart to the digestive system only
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Worked Solution

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

Correct answer: From the lungs to the heart

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