Archive
16th of September 2015
Biology
Q:

why lungs always contain residual volume of air ?

P Neethu - CBSE - Class X

Wednesday, September 16, 2015 at 18:36:PM

A:

Hi Neethu,

Lungs always contain residual volume of air so that there will be sufficient time for inhalation (oxygen to be absorbed) after exhalation (carbon dioxide to be released.)

Wednesday, September 16, 2015 at 18:41:PM