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Chest Changing Volume Creates A  Pressure Differential Atmosphere

Changing the chest volume creates a pressure differential between the chest and the atmosphere, which drives air movement to equalize these pressures.

Changer le volume thoracique crée une différence de pression entre la poitrine et l'atmosphère, l'air se déplaçant ensuite pour égaliser les pressions.

Front changing chest volume creates a 
Back pressure differential between the chest and atmosphere, with air then moving to equalise 

Tags: 6_4_gas_exchange

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