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Enseignement de l'appareil circulatoire

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Le globule rouge<br />

• Particularité <strong>de</strong><br />

l’hémoglobine :<br />

– L’O2 se fixe sur l’Heme<br />

(oxyhemoglobine.)<br />

– Le CO2 se fixe sur la<br />

globine<br />

(carbohémoglobine)<br />

– Le C0 se fixe sur l’Heme et<br />

donne un composé stable<br />

(carboxyhémoglobine.)<br />

globine<br />

Heme

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