Standard Science Primary 5 Systems

Where exactly does gaseous exchange take place in the human respiratory system?

A Nose
B Air sacs (Alveoli)
C Diaphragm
D Windpipe
Show Worked Solution

Worked Solution

Step 1: Air travels through the windpipe to the lungs. Step 2: The lungs contain millions of tiny air sacs. Step 3: Oxygen passes into the blood and carbon dioxide passes out of the blood at these air sacs.

Correct answer: Air sacs (Alveoli)

Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.

Start Free Trial — 7 Days Free