Respiration
delivery of oxygen to and removal of carbon dioxide from tissues
External respiration
ventilation and exchange of gases in lung
Internal respiration
exchange of gases at tissue level (between blood and tissues)
Pulmonary ventilation
movement of air into and out of lungs - inspiration and expiration
Pulmonary diffusion
exchange of oxygen and carbon dioxide between lungs and blood
What is dead space?
where no gas exchange occurs
What does happen in dead space?
filtering, warming and moistening of air (conducting zone)