What happens to your chest pressure when you breathe out?
Question
What happens to your chest pressure when you breathe out?
Solution
When you breathe out, also known as exhalation, the following happens:
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Your diaphragm relaxes: The diaphragm is a dome-shaped muscle at the bottom of your chest. When it relaxes, it moves upward into the chest cavity.
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Your intercostal muscles relax: These muscles are located between your ribs. When they relax, your rib cage gets smaller, decreasing the space in your chest cavity.
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Decreased chest cavity size: As the space in your chest cavity gets smaller, the pressure inside it increases.
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Air is forced out: The increase in pressure forces air out of your lungs and out of your body.
So, in summary, the pressure in your chest increases when you breathe out.
Similar Questions
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When the diaphragm and external intercostal muscles relax:Question 37Answera.The pressure inside the lungs (intrapulmonary/alveolar pressure) decreasesb.Inspiration occursc.The volume of the chest cavity decreasesd.The pressure inside the lungs (intrapulmonary/alveolar pressure) does not changee.The volume of the lungs does not change
Intrapleural pressure:Is positive during inspirationEnsures that the lung expands with the opening of the chest cavityIs positive during expirationDecreases during pneumothorax
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