12-10-2008, 06:38 PM
the graph (x-axis: pleural pressure; y-axis: expiratory flow rate) shows an isovolumetric pressure-flow curve (like enzyme-substrate curve.....) obtained at 25% of total lung capacity. An increase in which of the following is most likely to increase the plateau value of the expiratory flow rate?
a) Airway resistance
b) Amount of surfactant in the alveolar space
c) Ciliary beating frequence
d) Expiratory effort
e) Lung volume
f) Parasympathetic activity of fibers innervating the aiways
a) Airway resistance
b) Amount of surfactant in the alveolar space
c) Ciliary beating frequence
d) Expiratory effort
e) Lung volume
f) Parasympathetic activity of fibers innervating the aiways