Hello, Can anyone tell me why is the alveolar PO2 less than the atmospheric PO2? Thanks?

Question

Physiology , respiratory system , medicine , alveoli , oxygen , atmospheric pressure , breathing , partial pressure , po2

Answer

Due to low partial pressure of oxygen inside the alveoli of lungs compared to the atmospheric pO2, Oxygen from the atmosphere enters through nostrils and rushes through windpipe to reach the alveoli.

Hello, Can anyone tell me why is the alveolar PO2 less than the atmospheric PO2? Thanks?

Answers (1)