The pleural membranes cover which organ?
Correct answer: D. Lungs
- A. Kidney
- B. Heart
- C. Brain
- D. Lungs
Explanation
Option A: The kidney is covered by a tough renal capsule. Options B : The heart is enclosed in a double membranous sac - the pericardial cavity which contains the pericardial fluid. Option C : The brain is protected by a triple layer of meninges and cerebrospinal fluid (CSF). Option D: Pleural membranes cover the lungs. Lungs are covered with double-layered thin membranous sacs called 'pleura'. PTB XI Chap # 13 page # 268
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About Respiration
The human respiratory system includes the air passages, lungs, alveoli and breathing muscles, while gaseous exchange explains how oxygen enters blood and carbon dioxide leaves it by diffusion. The effects of smoking include damage to cilia and alveoli, reduced gas exchange, chronic bronchitis, emphysema and increased risk of lung cancer.
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