Question

Statement I: The diffusion membrane is made up of three major layers namely, the thin squamous epithelium of alveoli, the endothelium of alveolar capillaries and the basement membrane on the inner side.
Statement II: The total thickness of the diffusion membrane is much greater than a millimetre

• A. Both statements I and II are correct and II explains I
• B. Both statements I and II are correct and II does not explain I
• C. Statement I is true and statement II is false
• D. Both statements I and II are false

Answer 1

Answer: (D)

• The diffusion membrane is made up of three major layers namely, the thin squamous epithelium of alveoli, the endothelium of alveolar capillaries and the basement substance in between.
• The total thickness of the diffusion membrane is much less than a millimeter