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1. |
In lungs, the air is separated from the venous blood throughA. Squamous epithelium `+` tunica external of bllod vesselB. Squamouns epithelium `+` endotherlium of blood vesselC. Transitional epithelium `+` tunica media of blood vesselD. Columnar epithelium `+` 3 layered wall of bood vessel. |
Answer» Correct Answer - B | |