The membrane covering the lungs is a________?
Correct answer: A. Pleura
- A. Pleura
- B. Pericardium
- C. Peritoneum
- D. Mesothelium
Explanation
The lungs are enclosed by a double-layered membrane called the pleura, with pleural fluid between its layers to reduce friction during breathing. Students may choose pericardium because it is also a protective membrane, but the pericardium surrounds the heart, not the lungs.
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About Human Respiratory System
The human respiratory system conducts air to the alveoli, where oxygen and carbon dioxide exchange occurs across thin respiratory surfaces. Questions cover the nasal passage, trachea, bronchi, lungs, diaphragm and intercostal muscles, ventilation mechanics and gas transport, while distinguishing breathing and gaseous exchange from cellular respiration.
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