Biology, asked by aswinmeeyannur, 5 months ago

why carbon dioxide enters the alveoli from the blood capillaries​

Answers

Answered by garvsain
2

Answer:

The walls of the alveoli share a membrane with the capillaries. That's how close they are. This lets oxygen and carbon dioxide diffuse, or move freely, between the respiratory system and the bloodstream. Oxygen molecules attach to red blood cells, which travel back to the heart.

Explanation:

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Answered by itzHitman
11

Explanation:

The walls of the alveoli share a membrane with the capillaries. That's how close they are. This lets oxygen and carbon dioxide diffuse, or move freely, between the respiratory system and the bloodstream. Oxygen molecules attach to red blood cells, which travel back to the heart.

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