Which one of the following is a possibility with regard to breathing, by making a…

Biology · NEET · NTA ExamsBreathing and Exchange of Gases

Which one of the following is a possibility with regard to breathing, by making a conscious effort?
  1. One can breathe out air totally without oxygen
  2. One can breathe out air through eustachian tubes by closing both mouth and the nose
  3. One can consciously breathe in and breathe out by moving the diaphragm alone, without moving the ribs at all
  4. The lungs can be made fully empty by forcefully breathing out all the air from them

Answer

(C) One can consciously breathe in and breathe out by moving the diaphragm alone, without moving the ribs at all

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