Why are lungs divided into very small sac-like structures?

plants are divided into small, sac like structures known as alveoli so that the capillaries can absorb the oxygen.

Answered by laurel1999 | 2024-06-10

Lungs are made up of tiny sac-like structures called alveoli, which maximize surface area for gas exchange. Each lung has about 300 million alveoli, allowing for efficient transfer of oxygen into the blood and carbon dioxide out. This design, with thin walls and a network of capillaries, ensures effective breathing.
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Answered by Anonymous | 2024-09-30