78-80 Use the Formula below to answer the following questions C Change V, / Chan

Question

78-80 Use the Formula below to answer the following questions C Change V, / Change T 78. A heavy smoker would have a very easy time inhaling because of a. an increase in P TP b. an increase in CL c. an decrease in C L d. all of the above 79. A patient with fibrotic lung disease would have a very hard time inhaling because of a. an increase in P TP b. an increase in CL c. an decrease in C L d. all of the above 80. A Baby without the capacity to produce a surfactant would have a very hard time inhaling because of a. an increase in surface tension in the alveoli b. an increase in C L c. an decrease in CL d. both a and b

Explanation / Answer

79.

Answer is C

An decrease in CL (lung compliance is lower than normal) in fibrotic lung diseases have hard inhalation. The inspiratory muscles work hard to bring the transpulmonary pressure to get substantial lung expansion in inspiration.

80.

Answer is C

decrease in CL

The surface tension in lungs developed by water that have more chance to cause damage to lungs. This can be reduced by substance produced by epithelial cells(Type -II) of lungs called surfactant. It provide easy expansion of lungs. When insufficient production of surfactant leads to decreased stretchability of lungs. That characterised by hard inhalation. The decreased stretchability of lungs indicates decreased Lung compliance.

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