Gas mixing during inspiration.
D000818:Animals; D004058:Diffusion; D004285:Dogs; D006321:Heart / Q000502:physiology; D009584:Nitrogen; D010100:Oxygen; D011650:Pulmonary Alveoli / Q000502:physiology*; D012119:Respiration; D012126:Respiratory Dead Space
D009584:Nitrogen; D010100:Oxygen