Unformatted text preview: ance B. Compliance C. Inertance D. Conductance (inverse of resistance) E. None of the above 37. If two diffusive barriers are in series (as in a lung alveolus), the net diffusivity: A. Is the sum of the diffusivities B. Is the product of the diffusivities C. Is the inverse of the sum of inverse diffusivities D. Is the quotient of diffusivities E. None of the above 38. If the partial pressure of oxygen in the aorta is twice that in the vena cave, the ratio of molar concentrations of dissolved oxygen in blood in the aorta to vena cava is: A. 1 B. 2 C. 4 D. None of the above 39. Consider a 2um diameter gas-water bubble in tissue (gas on inside, water on outside). If over time, a surfactant diffuses into the gas-fluid interface and reduces the surface tension by 5X, with the moles of gas in the bubble remain the same and the surrounding fluid pressure unchanged. The radius of bubble will be: A. Increase B. Decrease C. Remain Unchanged D. None of the above 40. Phosphatidycholine is an important surfactant in lung mechanics. If thi...
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This note was uploaded on 05/15/2012 for the course BME 348 taught by Professor Tommilner during the Spring '12 term at University of Texas.
- Spring '12
- Biomedical Engineering