Standard Science Primary 5 Systems

Which of the following describes the correct path taken by air when it enters the human body?

A Mouth → Windpipe → Stomach
B Nose → Windpipe → Lungs
C Nose → Blood vessels → Heart
D Nose → Gullet → Lungs
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Worked Solution

Step 1: Air enters the respiratory system through the nose or mouth. Step 2: It travels down the respiratory tube called the windpipe (trachea). Step 3: From the windpipe, it enters the lungs where gas exchange occurs.

Correct answer: Nose → Windpipe → Lungs

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