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What causes the air pressure in your lungs to decrease and make you inhale?
Wiki User
∙ 8y ago
When you inhale, oxygen fills your lungs. Next the oxygen diffuses out of your lungs into your bloodstream. The diffusion of oxygen from the lungs causes less pressure in your lungs signaling your brain that you need to inhale.
Wiki User
∙ 11y ago
Wiki User
∙ 8y agoContraction of the diaphragm causes the air pressure in your lungs to decrease and makes you inhale. When this muscle contracts, it moves down, increasing the volume of the thoracic cavity.
Wiki User
∙ 8y agoThe diaphragm contracts. The shape of diaphragm gets less of the dome shaped. So there is increase in the volume of the thoracic cavity. So the air rush in.
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How do you inhale and exhale in the respiratory system?
by the air pressure we have inside our lungs
Do you in hale or exhale when the volume of the chest cavity increases?
The air pressure in your chest cavity increases when you are exhaling. For air to leave your lungs, it must be at a higher pressure than the air outside. Your diaphragm pushes up against your chest cavity causing the space in your lungs to get smaller. If the volume decreases, the pressure has to rise. Don't believe me? start exhaling, then close your mouth. Your cheeks will puff out because the pressure inside is greater than the pressure outside.
What happens to the air molecules in a divers lungs as the pressure increases during a dive?
As the diver descends deeper into the water, the pressure increases. This causes the air molecules in the diver's lungs to compress, leading to a decrease in volume. In order to maintain equilibrium with the increasing pressure, the air molecules in the lungs will be forced into smaller spaces, potentially causing discomfort or injury if not managed properly through controlled breathing techniques.
What is the result of inspiration and expiration?
This occurs within the respiratory system. During inpiration, the intercostal muscles contract, the diaphragm descends, and the rib cage rises. The thoracic cavity volume increases, stretching the lungs, and the intrapulmonary volume increases. This causes the intrapulmonary pressure to drop. Air flows into the lungs until the intrapulmonary pressure equals the atmospheric pressure. During expiration the intercostal muscles relax, the diaphragm rises, and the rib cage descends. The thoracic cavity volume decreases, causing the the lungs to recoil, and the intrapulmonary volume decreases. This causes the intrapulmonary pressure to rise, and the air flows out of the lungs until the intrapulmonary pressure equals the atmospheric pressure.
What element makes up the majority of the air we inhale?
are lungs and oxogent
Increasing the size of the thoracic cavity causes?
inhalation/inhale it also causes a decrease pressure in thoraces cavity and pleural cavity
When you inhale does pressure decrease inside or increase?
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.
How do you inhale and exhale in the respiratory system?
by the air pressure we have inside our lungs
Do you in hale or exhale when the volume of the chest cavity increases?
The air pressure in your chest cavity increases when you are exhaling. For air to leave your lungs, it must be at a higher pressure than the air outside. Your diaphragm pushes up against your chest cavity causing the space in your lungs to get smaller. If the volume decreases, the pressure has to rise. Don't believe me? start exhaling, then close your mouth. Your cheeks will puff out because the pressure inside is greater than the pressure outside.
What happens to lungs when you inhale?
what happens when you inhale is that air goes into your lungs and your lungs get bigger ...Actually, your diaphragm moves to expand the volume of your thoracic cavity, which pulls a partial vacuum on your lungs, causing them to expand FIRST...and THEN the partial vacuum created by your expanded lungs causes air to move into them. When you breath out, it causes the reverse to occur.
Does your chest expand because your lungs inflate or do your lungs inflate because your chest expands?
There are no muscles in the lungs that help inhale or exhale, this is the job of the diaphragm.
Does the relaxation of the diaphragm causes a slight vacuum the lungs?
No! When you inhale it does. So contraction not relaxation.
Why do your lungs inhale and exhale?
I believe that the pressure from the diaphragm causes our lungs inflate, thus we inhale and when the diaphragm deflates, it makes us exhale.--------------------------------------------------------------------- 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.
What muscle allows the lungs to fill the lungs with air?
The diaphragm. (located beneath the lungs) When it contracts it moves down, thus expanding the volume of the lungs. This causes the pressure in the lungs to decrease and air to flow in to the lungs. (pressure is inversely proportional volume- Boyle's law) This is inhaling. When the diaphragm relaxes it moves back up, decreasing the volume of the lungs and increasing the pressure which forces the air out. This is exhalation.
What is the action of the muscles that causes air to come into the lungs?
The action is the flattening of your diaphragm, or the muscle that helps your lungs inhale and exhale.
What causes static compliance in the lungs to decrease?
well .. the cause is if there is no air movement the Cst will decrease .
What enables us to breathe?
The contraction of the diaphragm causes it to move down, increasing the volume of the thoracic cavity. This movement and volume change decrease the pressure in the lungs, and air rushes in.
