as all we humans takes oxygen and releases carbondioxide,how our noe is able to identify that it is oxygen and this is carbondioxide as air consists of many compositions.how is it possible for human nose to identify the oxygen in air and takes only oxygen not other any gases?

Asked by ramya1994 | 7th Feb, 2011, 06:34: PM

Expert Answer:

Dear student,
Our nose takes in air as a whole. However, due to differences in partial pressure and affinity of hemoglobin to blood, it is only oxygen that is absorbed by blood, the remaining gases are exhaled out along with carbon dioxide released from blood to the outside.
Regards, TEam Topperlearning

Answered by  | 8th Feb, 2011, 04:40: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.