Diffusion of Gases
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | Exchange of gases at the capillary level, primarily O2 & CO2.
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| External Respiration | show 🗑
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| show | Occurs in the systemis system, between the Blood & Tissues.
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| Diffusion | show 🗑
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| Boyle's Law | show 🗑
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| show | V1/T1=V2/T2 - Pressure is constant & volume changes directly with temperature.
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| Gay-Lussac's Law | show 🗑
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| Combined Gas Law | show 🗑
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| show | In a mixture of gases, the total pressure is equal to the sum of the partial pressures of each separate gas.
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| show | Decrease in barometric pressure, in gas density and the partial pressure of the gases. BUT fractional concentrations of gases do NOT change.
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| show | Must be subtracted from total pressure before calculations are made.
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| Ideal Alveolar Gas Equation | show 🗑
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| show | Partial pressure of O2 in the alveoli = (barometric pressure - partial pressure of H2O (47mmHg)) fractional concentration of inspired O2 - partial pressure of arterial CO2 (1.25)
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| Alveolar capillary membrane | show 🗑
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| show | 1/25,000 of an inch
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| show | PvO2 = 40 TORR PAO2 = 100 TORR Pressure gradient = 60 TORR
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| show | PVCO2 = 46 TORR PACO2 = 40 TORR Pressure gradient = 6 TORR
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| show | Diffuse until gas pressure in the alveoli and pulmonary capillaries are in equilibrium. Normally occurs in 0.25 sec & transit time for blood in pulmonary capillary system is 0.75 sec.
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| Diseased Lungs | show 🗑
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| Flick's Law | show 🗑
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| show | gas flow = (pp 1 - pp 2)(area)(diffusion constant)/thickness
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| show | The amount of gas that dissolves in a liquid at a given temperature is proportional to the partial pressure of the gas.
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| show | the more gas will dissolve
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| show | less gas will dissolve
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| show | The amount of gas that can be dissolved in 1mL of a liquid at 760 TORR and a specified temperature. Each gas has its OWN!
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| At 37 degress & 760 TORR | show 🗑
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| For every 10% > in O2 above room air = | show 🗑
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Created by:
mfredenburg
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