Question

Membrane separating air in pulmonary alveoli from blood capillaries.

• A. Alveolar epithelium
• B. Cardiac epithelium
• C. Endothelium of blood capillaries
• D. Both ${}^{\prime }{1}^{\prime }$ and ${}^{\prime }{3}^{\prime }$

Answer 1

The correct option is A Alveolar epithelium

Here option (D) is the correct answer as-

Outermost Layer Of pulmonary alveolitis alveolar epithelium while that of blood capillaries is endothelium. Thus, both alveolar epithelium and endothelium of blood capillaries separate air in pulmonary alveoli from blood capillaries.