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STD 11 - 14. Breathing and exchange in gases — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 14. Breathing and exchange in gases4 Marks
MCQ
Friction on the lungs surface reduces by
  • ✓
    Double layered pleura
  • B
    Single layered pleura
  • C
    Ribs covering lungs
  • D
    Mucous membrane surrounding the lungs
✓

Answer

Correct option: A.
Double layered pleura
a
Humans have two lungs, which are covered by a double membrane called pleura, with pleural fluid between them. Pleural fluid reduces the friction on the lung surface. The outer pleural membrane is in close contact with the thoracic lining whereas the inner pleural membrane is in the contact with the lung surface

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