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Question

Which of the following protects the human lungs from external harm?
  1. Diaphragm
  2. Pleura
  3. Vertebral column
  4. Rib cage


Solution

The correct option is
The lungs are encaged within the bony rib cage, that protects them from external harm. The double layered pleura covers the lungs externally, and provides a cushioning effect by absorbing any internal shock. It is however, the surrounding rib cage that protects them from external disturbances.

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