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Alveoli are lined with a thin squamous epithelial layer to facilitate efficient gas diffusion.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Transport of Carbon Dioxide and Regulation of Respiration
Gas exchange occurs passively through diffusion, driven by partial pressure gradients of oxygen and carbon dioxide.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Exchange of Gases and Transport of Oxygen
The alveolar walls are composed of a thin squamous epithelial layer to facilitate gas diffusion, not smooth muscle.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Exchange of Gases and Transport of Oxygen
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