Air, blood and sound

Trace different kinds of movement through the body.

1. 01

   Make room for air

   Distinguish lung volume, airflow and alveolar exchange.

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2. 02

   Follow both blood loops

   Find how the lungs connect the right and left sides of the heart.

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3. 03

   Follow a vibration

   Compare air-particle motion with the movement of a sound wave.

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Take these steps at your own pace. Your place is not saved as account progress or scored.