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Que se passe-t-il quand je respire ? | Exercices scolaires
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Que se passe-t-il quand je respire ?

Dessine ce que tu as compris :

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Respirer, c’est inspirer et expirer .

En inspirant, tu apportes à ton corps l’oxygène dont il a besoin . L’air entre par ton nez ou ta bouche, descend dans la trachée, puis dans tes bronches jusqu’à tes poumons .

Une partie de l’air que tu as inspiré passe alors dans ton sang .

En expirant, tu rejettes de ton corps un gaz qui l’encombrait .

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