Standard Science Primary 5 Systems

Which of the following correctly describes the movement of oxygenated blood in the human body?

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

Step 1: Oxygen is taken in at the lungs. Step 2: Oxygenated blood returns to the heart. Step 3: The heart pumps it to the rest of the body.

Correct answer: Lungs → Heart → Rest of the body

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