- Joined
- Feb 16, 2016
- Messages
- 594
- Reaction score
- 96
Can someone just give me a quick explanation of negative pressure breathing. This Kaplan book does not do justice to the mechanism of breathing; it is honestly confusing me with their wording.
Can someone just give me a quick explanation of negative pressure breathing. This Kaplan book does not do justice to the mechanism of breathing; it is honestly confusing me with their wording.
@Astra118 So why do they include intrapleural space in their explanation. It just confuses me because I am used to thinking like how you wrote.
What I don't understand is how can we apply Boyle's law here when infact there is fluid in the pleural space & not air????As the diaphragm flattens, the volume of the chest walls expand out and increase. The intrapleural space increases in volume as well which decreases the pressure in this space. Since the air in the lungs is still at atmospheric pressure, but the pressure in the intrapleural space has dropped, the lungs expand into the intrapleural space which drops the pressure in the lungs. Air rushes into the lungs due to the pressure differential. When the diaphragm relaxes, air is pushed out by the reverse mechanism.