TRY IT YOURSELF
Build the air pathway
Tap the structures in the order inhaled air reaches them.
Your route will appear here.
SMALL BREATHS. BIG DISCOVERIES.
A journey with every breath.
Follow the air. Meet your lungs. Discover how oxygen reaches every cell.
BASED ON YOUR TEXTBOOK
Explore → Experiment → Explain
Explore → Experiment → Explain
THE RESPIRATORY SYSTEMLIVE 3D MODEL
Preparing your 3D lungs…
Trachea ↘
Right lung ↗
↖ Left lung
Diaphragm ↗
↔ Drag to rotate · Scroll to zoom
Simplified front view · labels follow the front view
Simplified front view · labels follow the front view
ONE IMPORTANT DIFFERENCE
Breathing ≠ respiration
Breathing moves air into and out of the lungs. Respiration is a chemical process in living cells that releases energy.
Oxygen + nutrients →
carbon dioxide + water + energy
carbon dioxide + water + energy
02 / VIRTUAL INVESTIGATION
A tiny air sac. A big exchange.
Oxygen moves from an alveolus into blood. Carbon dioxide moves the other way.
Inside an alveolus
ANIMATED SVG O₂: air → blood CO₂: blood → air
03 / TWO LOOPS, ONE JOURNEY
From your lungs to your cells.
Follow one blood journey. Count how many times it passes through the heart.
Blood rich in oxygen Blood rich in carbon dioxide
Blue is a diagram colour: blood is always red. Arteries carry blood away from the heart; veins carry blood towards it.
Think like a scientist
Does every artery carry blood rich in oxygen?
04 / YOUR SCIENCE NOTES
Prediction. Observation. Explanation.
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