alleryStart learning →What does pleural fluid do to the pleural surfaces?
ALiberates them
BLegislates them
CLengthens them
DLubricates them
Answer & Solution
Correct answer: D. Lubricates them
1. The two layers slide over one another with each breath.
2. Friction between them must be reduced.
3. Pleural fluid acts to lubricate their surfaces.
4. So the answer is lubricates them.
_Source: OpenStax 'Anatomy and Physiology 2e', Ch 22 'The Respiratory System'_
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