Negative intrapleural pressure is due to –
Correct Answer: Absorption by lymphatics
Description: The intrapleural pressure becomes more negative at the end of inspiration and less negative at expiration. It ranges between -3 and -6 mmHg.
The elasticity of lung and rib cage causes it to recoil and thus creating the negative pressure.
The lymphatic drainage of the pleural fluid also creates a negative pressure.
Category:
Physiology
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