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Unformatted text preview: May 7, 2007 Biology 130 Respiratory System (cont) Boyles law o Increase volume will amount of molecules increases and vice verse Contract diaphragm, increase space in thoracic cavity breath in. Relax diaphragm, decrease space in thoracic cavity breath out. Flow air F = P atm P avoli / R Intrepleural pressure P ip is always below atmospheric pressure preventing the layers from collapsing keeps the lungs open. about 4 mmHg lower than P atm Daltons Law o Pressure created by each gas is independent of the other gas pressure partial pressures o Proportions of gases 78% N, 21 % O, 0.03% CO2 Partial pressure gradients 160 mmHg of O. Body works so that Oxygen gents passed through body as a gradient exerted by the partial pressures of the gases Partial pressure of the gases depends on the temperature The partial pressure of the gases not only depends on the concentration but also on how well the gas dissolves in water Only 1% of oxygen dissolves in plasma. Only 1% of oxygen dissolves in plasma....
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This note was uploaded on 09/29/2009 for the course NPB NPB 101 taught by Professor Weidner/wingfield during the Spring '08 term at UC Davis.
- Spring '08