NEET Zoology Gas Exchange MCQ Question
Consider a diagram showing the structure involved in gas exchange in the human respiratory system. The diagram indicates three layers: a thin squamous epithelium, an endothelium, and a basement substance. Which layer directly supports the squamous epithelium in the diffusion membrane?
Basement membrane of the diffusion membrane
Endothelium of alveolar capillaries
Basement membrane surrounding endothelial cells
Thin squamous epithelium of alveoli
Correct Answer
Detailed Explanation
The diffusion membrane in the alveoli consists of three layers: the thin squamous epithelium, the endothelium of alveolar capillaries, and a basement substance. The basement membrane directly supports the squamous epithelium.
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