What is the respiratory membrane and what is its role in ventilation?
A) It lines the nasal cavity, where it serves to warm and moisten inspired air.
B) It lines the bronchial tree, where it secretes a layer of protective mucus, which serves to purify air entering the respiratory tract.
C) It consists of the alveolar epithelium, the capillary endothelium and their joined basement membranes; it provides the surface through which gas exchange occurs.
D) It lines the thoracic cavity, where it aids in lung expansion.

Question

Quizplus · Accepted Answer

The respiratory membrane consists of the alveolar epithelium, the capillary endothelium and their joined basement membranes. Its role in ventilation is to provide the surface through which gas exchange occurs, allowing for the diffusion of oxygen from the alveoli into the blood and the diffusion of carbon dioxide from the blood into the alveoli for exhalation.

What Is the Respiratory Membrane and What Is Its Role