2013 · Q82
82. In humans, which one among the following, with reference to breathing, is correct ?
General KnowledgeBiology
- ADuring inhalation, diaphragm relaxes
- BDuring exhalation, thorax cavity expands
- CDuring inhalation, intra-pleural pressure becomes more negative
- DUnlike inhalation, normal exhalation is an active process
Explanation
During inhalation the intra-pleural pressure becomes more negative; the official key marks C.