The Pleural Membranes

Question

The pleural membranes
A) line the respiratory passages.
B) form the bronchioles.
C) are serous membranes.
D) are confined to the mediastinum.

Accepted Answer

The pleural membranes are serous membranes that line the thoracic cavity and cover the lungs to reduce friction during breathing. They are not involved in lining respiratory passages (A) or forming bronchioles (B), and they extend beyond the mediastinum to cover the surfaces of the lungs.