Question

Which gas is excreted by lungs?

Answer 1

Gas excreted by lungs

1. Carbon dioxide is released by the lungs.
2. Oxygen is utilized by living beings to indirectly break down nutrient molecules like glucose.
3. During the breakdown of glucose, Carbon dioxide is released which is harmful to the cell.
4. Vascularized bags called lungs are used by living beings for the exchange of gases.
5. The branching network of bronchi, bronchioles, and alveoli from the lungs.
6. Alveoli is the site where the actual exchange of gases takes place.
7. Actual diffusion of O₂ and CO₂ between blood and atmospheric air takes place in alveoli.
8. O₂ has to be continuously provided to the cells during inspiration and carbon dioxide produced by the cells has to be released by expiration.
9. The air move in and out of the lungs by creating a pressure gradient between the lungs and the atmosphere.