Why is the structure of the lungs important? أ) Because it helps in food digestion ب) Because it supports gas exchange efficiently ج) Because it stores oxygen؟
إجابة الطالب المختصرة من خلال موقع بوابة الإجابات هي
ب) Because it supports gas exchange efficiently
The correct answer is **b) Because it supports gas exchange efficiently**. Here's why:
* **The structure of the lungs is specifically designed to maximize the surface area available for gas exchange.** This is achieved through:
* **Alveoli:** Tiny air sacs in the lungs that have very thin walls, allowing oxygen to pass into the blood and carbon dioxide to pass out. There are millions of alveoli, greatly increasing the surface area.
* **Capillaries:** A dense network of capillaries surrounds the alveoli, ensuring that blood is in close proximity to the air.
Here's why the other options are incorrect:
* **a) Because it helps in food digestion:** The lungs have no role in food digestion. That is the role of the digestive system.
* **c) Because it stores oxygen:** While the lungs contain oxygen, their primary function is not storage. Oxygen is quickly transferred into the bloodstream to be transported throughout the body.
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