The systema respiratorium is what allows us to breathe and exchange CO2 for oxygen. The human systema respiratorium may be a series of organs liable for taking in oxygen and expelling CO2 . the first organs of the systema respiratorium are the lungs, which perform this exchange of gases as we breathe. Respiratory Medicine is an internationally-renowned journal dedicated to the rapid publication of clinically-relevant respiratory medicine research. It combines cutting-edge original research with state-of-the-art reviews handling all aspects of respiratory diseases and therapeutic interventions.