1.

In lungs, the air is separated from the venous blood throughA. Transitional epithelium of alveoli + squamous epithelium of blood vesselB. Swuamous epithelium of alveoli + endothelium of blood vesselC. Squamous epithelium of alveoli + cubical epithelium of blood vesselD. Cubical epithlium of alveoli + columnar epithelium of blood vessel

Answer» Correct Answer - B


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