Q. Identify the component of respiratory system which displays the features given below and choose the correct option I. Double layered II. Fluid contained in it reduces the friction on the lung surface III. Its outer layer is in contact with thoracic wall IV. Its inner layer is in contact with lungs
A) Visceral layer
B) Peritoneum cavity
C) Visceral organs
D) Pleura
Explanation
Humans have two lungs, which are covered by a double layered pleura with pleural fluid between them. Pleural fluid reduces the friction on the lung-surface. The outer pleural membrane is in close contact with the thoracic lining whereas, the inner pleural membrane is in the contact with the lung surface
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.