Atmospheric pressure of air at sea level is usually 760 mmHg. If the pressure in the alveoli is 761 mmHg, which of the following must be TRUE? O According to Boyle's law the alveoli must have increased their volume to generate this increase in pressure Air must be moving by bulk flow out of the alveoli because of this pressure gradient The diaphragm has contracted to create this pressure gradient All of the above

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