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Breathing and Exchange of Gases question

2011 · Q17
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Breathing and Exchange of Gases question

2011 · Q17

NEETBiologyBreathing and Exchange of GasesMCQ+4 / −1
Which one of the following is a possibility for most of us in regard to breathing, by making a conscious effort?
  1. A
    One can breathe out air totally without oxygen.
  2. B
    One can breathe out air through Eustachian tube by closing both nose and mouth.
  3. C
    One can consciously breathe in and breathe out by moving the diaphragm alone, without moving the ribs at all.
  4. D
    The lungs can be made fully empty by forcefully breathing out all air from them.
View written solutionFree

Correct answer: C

Option C is correct because the diaphragm is the main muscle responsible for breathing, and it separates the chest cavity from the abdominal cavity. By making a conscious effort, one can control the movement of the diaphragm and breathe in and out without moving the ribs at all. This is called diaphragmatic breathing or belly breathing. It is a technique often used in yoga, meditation, and other relaxation exercises to increase oxygenation and reduce stress. With practice, diaphragmatic breathing can become a natural and automatic way of breathing, even during regular activities.

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