Using specific values for each of the pressures, explain air movement into the out of the...

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Medical Sciences

Using specific values for each of the pressures, explainair movement into the out of the lungs during the respiratory cycleand why we are defined as negative pressure breathers.
Pressures: Atmospheric, inter-alveolar, intrapleural,transpulmonary.

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Intrapleural pressure This is pressure within the pleural space also called intrathoracic pressure Midthoracic oesophageal pressure measures intrapleural pressure The volume of fluid in the intrapleural space is small 2010 mL but closely regulated by Starling forces It is essential that intrapleural fluid volume remains small so that the cohesive forces linking the lung to the inner chest wall are preserved and thoracic cage enlargement results in lung expansion A net Starling force of about 9 cm H2O favors fluid filtration from the parietalside circulation into the intrapleural space whereas an oncotic force of See Answer

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