In humans, which one among the following, with reference to breathing, is correct?

MCQ. In humans, which one among the following, with reference to breathing, is correct?

(a) During inhalation, diaphragm relaxes

(b) During exhalation, thorax cavity expands

(c) During inhalation, intro-pleural pressure becomes more negative

(d) unlike inhalation, normal exhalation is an active process

Answer: (a) During inhalation, diaphragm relaxes

 

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