The diffusion membrane is made up of:
(A) Thick columnar epithelium of alveoli
(B) Endothelium of alveolar capillaries
(C) Basement substances in between capillaries and alveoli

Assertion: 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 in between Reason: The total thickness of the diffusion membrane is much greater than a millimetre.

Membrane separating air in pulmonary alveoli from blood capillaries :

Membrane separating air in pulmonary alveoli from blood capillaries is :

Membrane seprating air in pulmonary alveoli from blood capillaries is:

How many layers are present in the diffusion membrane of alveolar capillary?

The exchange of gases between blood capillaries and alveoli in the lung is through

The exchange of gases between blood capillaries and alveoli in the lung is through

The exchange of gases between blood capillaries and alveoli in the lung is through

The exchange of gases between blood capillaries and alveoli in the lung is through