This depends on exhalation or inhalation. If you are exhaling the pressure would be greater inside the lungs than the outside, but if you are inhaling, then the pressure would be greater on the outside than the inside.
Partly. Your diaphragm contracts and increases the volume of your chest cavity. Air enters to fill the space. The pressure in the chest cavity is slightly lower than the atmosphere while you are inhaling, but it is all caused by the volume increasing.
When you exhale the opposite occurs. the volume of you chest cavity decreases and it pushes the air back out.. during the exhale, the pressure inside your chest is slightly higher than outside your body.
Air moves from a higher pressure region to a lower pressure region. As you inhale, the air moves from outside your body to inside your lungs, so the air in your lungs has a lower pressure.
True
You inhale.
u die.
when air moves out of the lungs, the air pressure decreases
Inspiration happens when the pressure inside the lungs is lower than the atmospheric pressure (outside) and air rushes into the lungs. Expiration is when the air inside the lungs is higher than the atmospheric pressure and the air rushes out of the lungs. If the intrapleural pressure (pressure within the pleura of the lungs) isn't maintained then the pressure in the lungs can't differentiate between inspiration and expiration and so the lung collapses.
The pressure inside the lungs decreases as the ribcage moves out and up. Air from outside basically gets pushed in by other air molecules due to the pressure gradient (air moves from a high pressure to a low pressure)
reduces intra-thoracic pressure which creates suction that draws air into lungs
by the air pressure we have inside our lungs
when pressure inside the lungs is lower then outer atmosphere
You use the respirerotry system. To be precise when air is to be sucked in, the brain askes the lungs to expand, which naturally creates a low pressure inside the lungs. Similarly when the lungs are compressed the air inside is flushed out.
The act of inhaling is to create low pressure in the lungs, causing the air in the atmosphere to rush in as it is moving from a higher pressure (outside in the atmosphere) to the lower pressure (created in the lungs). However the fact that air does move into the lungs means that there is no net change in pressure.
Air goes into or out of the lungs due to differential pressure. On inhalation, the pressure within the lungs is below atmospheric, so outside air rushes in. On exhalation, the pressure within the lungs is above atmopheric, so inside air rushes out. When you stop breathing for the moment at the end of exhalation, or when you transition from inhalation to exhalation at the end of inhalation, there is no air flow, because there is no differential pressure. Assuming that you do not close your larynx, then, when the lungs are at rest, the air pressure in the lungs is the same as atmospheric, and this occurs twice in each complete breathing cycle.
a region of low pressure is created inside the lungs when compared to the outside atmosphere .When air is drawn inside air pressure is increased.
AnswerAir is actually forced into the lungs by atmospheric pressure. But here's the rest of the story. The diaphragm, a muscle below the lungs, contracts and actually makes the space in which the lungs are located, the thorax, get bigger. When this space gets bigger, the pressure inside it decreases. There is now a difference in pressure between the lung cavity and the outside air with the outside air having more pressure. Air goes from where the pressure is higher to where it is lower, and so it goes into the lungs. That's called inspiration or inhaling. When the diaphragm relaxes, the thorax gets smaller and the pressure increases in the lungs and air is forced out. Click the link for more information.
at higher altitudes the pressure of air is greater in our lungs as compare to the air pressure outside the body