Which of the following statements about the diffusion membrane in alveoli is incorrect?

Practice question

Question

Which of the following statements about the diffusion membrane in alveoli is incorrect?

Options

Choose one · Correct answer highlighted

It consists of three layers. It has a thickness of more than 1 mm. Correct It includes alveolar epithelium and capillary endothelium. It facilitates oxygen and carbon dioxide exchange.

Explanation

The diffusion membrane in alveoli is much thinner than 1 mm, allowing efficient gas exchange.

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