As your diaphragm or intercoastal muscles contract the size of the lungs increases. This creates a pressure difference between your lungs and the surrounding atmosphere. By increasing the size of the lungs you create a low pressure environment in the lungs by expanding the same amount of gas to a larger area. this pressure difference doesn't have to be much 1mmhg is more then enough, the main thing is just that you need a difference in preasure. Air flows from high preasure to low preasure, so by decreasing the preasure in the lungs air flows into the lungs. as you breath out you make the lungs smaller by relaxing the muscles and diaphragm, making the volume in the lungs decrease, thus increasing the preasure and moving the air from inside the lungs out to the surrounding atmosphere.
Your diaphragm is the muscle that helps air move in and out of your body. It is a muscle below your lungs, contracting and relaxing as you breathe. When inhaling, the diaphragm contracts and moves down, causing the volume of your chest cavity to increase with air. This causes air pressure to reduce in the chest cavity, thus causing air pressure outside the body to increase and force itself into your air passage ways and into your lungs.
The reason for this is based on the basic gas laws that state that gases will move from an area of high concentration (or pressure) to an area of low concentration/pressure.
Another gas law (known as Boyle's law) states that as the size of the container a gas is in increases, the pressure will decrease (as the gas particles have more room to spread out)
These laws can be applied to inspiration:
When we inhale, the intercostal muscles between the ribs contract - this pulls the ribs upwards and outwards, increasing the size of the thoracic cavity.
The diaphragm will also contract and flatten, which further increases the size of the thoracic cavity
Because the volume has increased, the pressure inside the thoracic cavity will decrease, so that it is lower than the atmospheric pressure. Air (following the rule that gas moves from high pressure to low pressure) will therefore be drawn into the lungs.
so you can get oxygen in you body
Lungs inhale to supply the body with oxygen, they exhale to dispose of poisonous gasses such as carbon dioxide.
It doesn't. Exhale means breathing out, when air leave the lungs.
Air doesn't go into your lungs when you exhale, exhale means to breathe out. Air goes into your lungs when you inhale.
when lungs inhale oxygen what doesit exhale as waste
with your lungs
when lungs inhale oxygen what does it exhale as waste
when you inhale your lungs expand when you exhale they deflate because the air leaves the lungs.
They have lungs and they breath just like you do.
When you inhale, yes, when you exhale, no.
Your lungs circulate oxygen every time you inhale and exhale. They travel through your body when you inhale to the lungs and the lungs store the oxygen, and as you exhale, carbon dioxide from the air is released.
It is the natural elasticity of the lungs that allows us to exhale.
by the air pressure we have inside our lungs
it contracts when you exhale because it is pushing the air out of your lungs.
Inhale and exhale.
oxygen goes into your lungs and then co2 comes out when mixed with a substance in your lungs.