Which organ is used for breathing?

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Multiple Choice

Which organ is used for breathing?

Explanation:
Breathing relies on the lungs to perform gas exchange. Air moves into the lungs through the airways and reaches tiny sacs called alveoli. There, oxygen from the air passes into the blood, and carbon dioxide from the blood moves into the alveoli to be exhaled. The diaphragm and chest muscles help move air in and out, but the actual site where breathing happens is the lungs. The heart is the pump that circulates blood, not the organ that takes in or expels air. The brain helps regulate how fast and deep we breathe, but it doesn’t perform the breathing itself. The liver processes nutrients and detoxifies the body, with no role in the breathing process.

Breathing relies on the lungs to perform gas exchange. Air moves into the lungs through the airways and reaches tiny sacs called alveoli. There, oxygen from the air passes into the blood, and carbon dioxide from the blood moves into the alveoli to be exhaled. The diaphragm and chest muscles help move air in and out, but the actual site where breathing happens is the lungs.

The heart is the pump that circulates blood, not the organ that takes in or expels air. The brain helps regulate how fast and deep we breathe, but it doesn’t perform the breathing itself. The liver processes nutrients and detoxifies the body, with no role in the breathing process.

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