Standard Science Primary 5 Systems

Which of the following represents the correct flow of blood in the human body?

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

Step 1: The heart pumps deoxygenated blood to the lungs. Step [2-9]: Oxygenated blood returns to the heart. Step [2-9]: The heart then pumps this oxygen-rich blood to the rest of the body.

Correct answer: Heart → Lungs → Heart → Rest of body

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