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scoray [572]
2 years ago
8

How are gasses exchanged in the alveoli

Biology
1 answer:
Vaselesa [24]2 years ago
4 0

Answer:

The alveolar walls and capillary walls share a membrane. That's how close they're getting. This allows oxygen and carbon dioxide to readily pass from the respiratory system to the circulation. Oxygen molecules bind to red blood cells as they return to the heart.

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