- #1
fog37
- 1,568
- 108
- TL;DR Summary
- Breathing in human beings...
Hello,
Human breath the following way: air at ambient pressure is pushed into the lungs during the inhaling phase because the air pressure inside the lungs is lower than ambient pressure: ##p_{inside}<p_{outside}##. During the exhaling phase, the air pressure inside the lungs becomes instead slightly larger: ##p_{inside} >p_{outside}##. Is that correct? I think so.
What kind of pressure differences are we talking about? Is the pressure difference larger or smaller during the exhale phase?
I am trying to better understand what happens when the diaphragm contracts: the diaphragm contracts, move downward ,expands laterally becoming less thick but large, causing the thoracic cavity to expand and move slightly upward...I guess the diaphragm is connected to the lower part of the thoracic cavity that is why the thoracic cavity responds when the diaphragm, which is a muscle, contract.
I have been thinking about how deep underwater someone can go with a snorkeling tube and that caused these thoughts...
Thank you for any input in advance...
Human breath the following way: air at ambient pressure is pushed into the lungs during the inhaling phase because the air pressure inside the lungs is lower than ambient pressure: ##p_{inside}<p_{outside}##. During the exhaling phase, the air pressure inside the lungs becomes instead slightly larger: ##p_{inside} >p_{outside}##. Is that correct? I think so.
What kind of pressure differences are we talking about? Is the pressure difference larger or smaller during the exhale phase?
I am trying to better understand what happens when the diaphragm contracts: the diaphragm contracts, move downward ,expands laterally becoming less thick but large, causing the thoracic cavity to expand and move slightly upward...I guess the diaphragm is connected to the lower part of the thoracic cavity that is why the thoracic cavity responds when the diaphragm, which is a muscle, contract.
I have been thinking about how deep underwater someone can go with a snorkeling tube and that caused these thoughts...
Thank you for any input in advance...