Physiological Meaning of Intravascular Pressure
Changes in pressure result from changes in density of molecules which are so small for fluid that volume changes in a fluid can be neglected for all pressure changes within a physiological range. When we take a breath and dive to ten meters below water surface ambient pressure will be doubled to two atmospheres. This increase in pressure will not change the volume of our body except for the gas volumes of our lungs and intestine. These cavities will decrease to half their normal value according to the law of Boyle Gay Lussac: PV/T is constant, where P is pressure, V is volume and T is absolute temperature.
KeywordsCatheter Expense Pamine
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