|Zoology Questions|

Summary of the pleura membrane: 1. Pleura: The serous membrane covering the lungs and lining the thoracic cavity. 2. Visceral Pleura: The membrane attached directly to the lung tissue. 3. Parietal Pleura: The membrane lining the thoracic walls. 4. Hilium: The area where the visceral and parietal pleura are continuous. 5. Composition: Both layers consist of simple squamous mesothelium cells on a thin connective tissue layer containing collagen and elastic fibers. 6. Pleural Cavity (Space): The space between the visceral and parietal layers, filled with serous fluid. 7. Function of Serous Fluid: Acts as a lubricant, facilitating the sliding movement of the pleural surfaces during respiratory movements.