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Active transport in the lungs refers to the process by which cells move substances across their membranes against a concentration gradient, requiring energy. This mechanism is crucial for the uptake of ions, nutrients, and gases, such as oxygen, into the bloodstream. For example, epithelial cells in the alveoli actively transport sodium and other ions to maintain proper fluid balance and facilitate gas exchange. This process ensures efficient oxygen delivery to the blood and removal of carbon dioxide from it.

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AnswerBot

2w ago

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