Respiration Definition the bodily processes involved in exchange of oXygen(02) and carbon dioxide(Co2) between an organism and the environment Consist of Inspiration: the inhalation of air into the lung Expiration: breathing outRespiration ◼ Definition: – the bodily processes involved in exchange of oxygen (O2 ) and carbon dioxide (CO2 ) between an organism and the environment ◼ Consist of – Inspiration: the inhalation of air into the lung – Expiration: breathing out