TORONTO -. Mike Babcock's first exhibition schedule as coach of the Maple Leafs will take him to some interesting arenas.
There are two types of 'respiration': pulmonary (visible breathing) and cellular (which is not visible). In pulmonary respiration the unwanted gas expelled is mainly carbon dioxide. This is then replaced during the inhalation breathing phase by the oxygen content in the air.
Medical Definition of respiration. 1  1a: the movement of respiratory gases (as oxygen and carbon dioxide) into and out of the lungsb: a single complete act of breathing 30 respirations per minute.