6.4 Gas Exchange

BioKnowledgy Presentation on 6.4 Gas exchange from Chris Paine

Some past paper questions answered by IB Blueprint: Gas Exchange – Exam Paper 1 QuestionsGas Exchange – Paper 2 Questions.

Fantastic animated tutorials from McGraw Hill Education – alveolar pressure changes during breathing & gas exchange during respiration (breathing).

What happens during VENTILATION (breathing) explained here 6.4.5 Explain mechanism of ventilation from Stephanie Castle (2m vid).

How do the Lungs work? – a three and a half minute lesson from TED-Ed:

And here is another TED-Ed lesson: Oxygen’s surprisingly complex journey through your body.

Paul Andersen describes The Respiratory System in an 8m 46s tutorial.

In Crash Course Biology #27 – Circulatory & Respiratory Systems, Hank takes us on a trip around the body – we follow the circulatory and respiratory systems.

An animated guide to breathing from Tabletop Whale.


Monitoring of ventilation in humans at rest and after mild and vigorous exercise

Spirometry – notes from BioNinja

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