Lungs are covered with double layered thin membranous sac called___________?
Correct answer: B. Pleura
- A. Disphragm
- B. Pleura
- C. Pericardium
- D. Rib cage
Explanation
The lungs are enclosed by the pleura, a double-layered membrane with a thin fluid-filled space that reduces friction during breathing. Students may choose the diaphragm because it moves the lungs during ventilation, but it is a muscle below the lungs rather than their membranous covering.
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