Which of the Following Membranes Secretes Serous Fluid

Question

Which of the following membranes secretes serous fluid?
A) Membrane that lines the respiratory tract
B) Membrane that lines the digestive tract
C) Membrane that lines the inner wall of the pleural cavity
D) Membrane that lines the urinary tract

Accepted Answer

The membrane that lines the inner wall of the pleural cavity secretes serous fluid. This membrane is called the pleura and it surrounds the lungs, reducing friction when the lungs expand and contract during breathing.