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Q3. (Optional) Explain the important role of the alveoli in the cardio-respiratory system.

Sagot :

Final answer:

The alveoli are vital for gas exchange in the cardio-respiratory system, enabling oxygenation of blood and removal of carbon dioxide.


Explanation:

The alveoli play a crucial role in the cardio-respiratory system by facilitating gas exchange.

They provide a large surface area (~75m²) for the exchange of oxygen and carbon dioxide between the respiratory and circulatory systems.

The thin walls of the alveoli allow for efficient diffusion of gases, ensuring oxygenation of blood and removal of carbon dioxide, essential for cellular function.


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