Question

which of the following is not part of the respiratory membrane? multiple choice simple squamous epithelium of the alveolus and its basement membrane interstitial space pulmonary capillary simple squamous epithelium and its basement membrane thick layer of mucus lining the alveolus

Explanation:

The respiratory membrane is very thin to allow for efficient gas exchange. It consists of the simple squamous epithelium of the alveolus and its basement membrane, the interstitial space, and the pulmonary capillary simple squamous epithelium and its basement membrane. A thick layer of mucus lining the alveolus would impede gas - exchange and is not part of the respiratory membrane.

Answer:

Thick layer of mucus lining the alveolus