The double membrane covering each lung is the
Correct answer: A. pleura
- A. pleura
- B. pericardium
- C. peritoneum
- D. meninges
Explanation
The pleura secretes fluid that lets the lungs slide smoothly against the chest wall during breathing. The pericardium wraps the heart and the peritoneum the gut, so each serous membrane is named for its organ.
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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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