ZOO 3210 Study Guide - Final Guide: Partial Pressure
16 Oct 2015
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Comparative: humans, lungs, diaphragm, chilopods/diplopods, spiracle, tracheal system, mollusca (land snail, lung (mantle cavity, shell. Topics: basic principles, anatomy/biomechanics, physiology, basic principles. Pressure (we"re never gonna lie to youuuuu: classically measured using mm of mercury (mmhg), but really these units are interchangeable, mercury barometer is usually used to measure atmospheric pressure. 760 mm hg = 1 atm = 101 kpa = 760 torr. Partial pressure: total pressure x fractional composition = partial pressure, the total pressure exerted by a mix of gases is the sum of the partial pressures exerted by the individual constituents of the mixture. In the diagram each gas is contributing a different amount of pressure to the total pressure we experience in air. Well, we can determine how much pressure gases are contributing when we know the given temperature, volume, and amount of gas we"re concerned with: if temperature increases, pressure increases, if volume increases, pressure decreases.
