Physical Principles in RT Part 4.txt

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  1. Look up page 109 in Rays text book and page 108. all on henry's law
  2. The Law that states: the volume of a gas varies inversely with its pressure.
    Boyle's Law
  3. The formula for Boyle's Law
  4. The Law that states the volume of a gas varies directly with changes in temp.
    Charles' Law
  5. The formula for Charles' Law
  6. The Law that sates: the pressure exertd by a gas varies directly with its absolute temp.
    Gay-Lussac's Law
  7. Gay-Lussac's formula
  8. What is the formula for the universal gas Law?
  9. What does STP mean?
    0C and 760mmHg
  10. Body temp BT means?
  11. Ambient temp. (AT) or pressure (AP) means?
    The existing environmental temp. or pressure.( opp. of STP)
  12. Saturated gas (S) means?
    a volume of gas with a relative humidity of 100% at any given temp.
  13. Dry gas (D) means?
    a volume of gas w/ no vapor in it.
  14. STPD means?
    a volume of dry gas at temp. of 0C and Pressure 760mmHg
  15. BTPS means?
    a volume of gas saturated w/ water vapor at 37C and ambient enviroment pressure.
  16. ATPS means?
    a volume of gas saturated with water vapor at ambient temp. (room temp.) and pressure.
  17. When reporting: reporting gases in the lungs are recorded as?
  18. When reporting: gases that undergo chemical rxn in the body, such as blood gases, are recorded?
  19. If saturated gas vol. are to be used in physiologic calc., they are fist________, then calc, back to______.
    corcected to their dry volume, the saturated value.
  20. Is the temp. above which the kinetic activity of its molecules is so great that the attactive forced cannot keep them in a liquid state. It is the highest temp. at which a substance can exist as a liquid.
    Crtical temp. of a liquid.
  21. Is the oressure neede to maintain equilibrium between the liquid and gas phases of a substance at this critical temp.
    Critical pressure.
  22. Is where you have critical temp. and critical pressure of a substance.
    Critical point
  23. A gas that has a critical temp. so low that at room temp. and press. it cannot exist as a liquid.
    True Gas
  24. is the gaseus state of a substance coexisting with its liqud or solid state at room temp. and pressure.
  25. is the bulk movement of a substance through space.
  26. is the study of fluids in motion.
  27. The pressure exerted by a liquid in motion depends on the nature of _____ not just the depth and density of the fluid.
    Flow itself
  28. It states that in any mechanical process, there will always be a decrease in the total energy available to do work.
    The Second Law of Thermodynaics
  29. As fluid flows through a tube there will be a pressure drop along the way due to?
    a cumulative energy loss
  30. What is the forumla for total flow resistance?
  31. In the flow resistance equations what does P1 stand for?
    it is the pressure at the upstream point
  32. In the flow resistance formula what does P2 stand for?
    it is the pressure at the downstream point
  33. In the flow resistance formula, what does V stand for?
    It is the flow
  34. Flow where a fluid moves in discrete cylindrical layers or streamlines.
    laminar flow
  35. Determines the pressure difference required to produce a given flow, under conditions of laminar flow through smooth tube of a fixed size.
    Poiseuille's Law
  36. Formula of for poiseuille's law. Determines press. diff. to prod. a flow.
    DeltaP= 8nlv/pir^4
  37. in poiseuille's formula delta P stands for?
    the driving pressure gradient
  38. in poiseulle's formula n stands for?
    the viscosity of the fluid
  39. in poiseulle's formula l stands for?
    the tube length
  40. in poiseulle's formula v stands for?
    the fluid flow
  41. in poiseulle's formula r stands for?
    the tube radius
  42. For fluids flowinf in a laminar pattern, the driving pressure will increase whenever the_________?
    fluic viscosity, tube length, or flow increases.
  43. Greater pressure will be required to maintain a given flow if the tube radius_____?
  44. flow where ther fluid molecules form irregular eddy currents on a chaotic pattern.
    Turbulent flow
  45. Formula for reynolds number
  46. in reynolds number formula v stands for?
    linear velocity
  47. in reynolds number d stands for?
    fluid density
  48. In reynolds number r stand for?
    the tube radius
  49. in reynolds number n stands for?
  50. In a smooth-bore tube, laminar flow becomes turbulent when Nr exceeds______.
  51. These conditions favor what type of flow: increased fluid velocity, increased fluid density, increased tube radius, or decreased fluid viscosity?
    turbulent flow
  52. When flow is turbulent the press. diff across a tube is defined by what formula?
    deltaP = flV^2/4pi^2r^5
  53. deltaP = flV^2/4pi^2r^5 f stands for?
    friction factor based on the fluid's density and viscosity and the tube wall roughness.
  54. deltaP = flV^2/4pi^2r^5 l stands for?
    the tube length
  55. deltaP = flV^2/4pi^2r^5 v stands for?
    the fluid flow
  56. deltaP = flV^2/4pi^2r^5 r stands for?
    the radius
  57. To double flow under laminar conditions, you only need to double ____.
    the dricing pressure
  58. To double flow under turbulent conditions, you would have to?
    increase the dricing pressure fourfold
  59. is a mixture of laminar and turbulent flow.
    transitional flow
  60. flow in the respiratory tract is mianly____
  61. when all else is equal, pressres generated during laminar flow are most effect by fluid viscosity, whereas fluid density is the key factor when?
    flow is turbulent
  62. the most common units for flow are?
    L/min or L/sec
  63. The most common unit for velocity are?
  64. fluid velocity, at a constant flow, varies inversely with the cross-sectional area of the tube. This relationship is called?
    Law of Continuity
  65. what kind of effect is done when a fluid flows through a tube of uniform diameter, pressure drecreases prgressively over the tube lenght.
    The Benoulli
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Physical Principles in RT Part 4.txt
RESP 130
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