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What is the relationship between Boyle's Law and breathing?

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The relationship between gas pressure and volume helps to explain the mechanics of breathing. Boyle's Law is the gas law which states that in a closed space, pressure and volume are inversely related. As volume decreases, pressure increases and vice versa. read more

Or it can be expressed as, PV= constant. In the lungs, as the volume increases, pressure decreases and vice versa. So, the inverse relation of pressure and volume creates a pump which causes breathing. This is how the lungs follow the Boyle's law. read more

Mechanics of Breathing. Boyle's Law describes the relationship between the pressure (P) and the volume (V) of a gas. The law states that if the volume increases, then the pressure must decrease (or vice versa). This relationship is often written algebraically as PV = constant, or P 1V 1 = P 2V 2. read more

The only space where Boyles law applies with regard to breathing is the pleural cavity which is enclosed and therefore experiences changes of pressure/volume as the lungs expand and contract. At rest, the lungs experience fluid flow with an increasing/decreasing volume but as they are open to the static atmosphere there are flow/mass changes not pressure/volume changes in the way that Boyles Law states. read more

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