Standard Science Primary 5 Systems

Which of the following correctly describes the movement of oxygen in our body?

A Nose -> Gullet -> Heart -> Lungs
B Nose -> Windpipe -> Lungs -> Heart -> Body parts
C Windpipe -> Heart -> Lungs -> Body parts
D Lungs -> Stomach -> Heart -> Brain
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Worked Solution

Step 1: Oxygen enters via the nose/mouth to the windpipe. Step 2: It moves to the lungs for gas exchange. Step 3: The heart pumps oxygenated blood to the rest of the body.

Correct answer: Nose -> Windpipe -> Lungs -> Heart -> Body parts

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