title: Breathing movements in the frog Rana pipiens. II. The power output and efficiency of breathing.
mesh_terms: D000818:Animals; D008168:Lung / Q000502:physiology; D009055:Mouth / Q000502:physiology; D010101:Oxygen Consumption; D011894:Rana pipiens / Q000502:physiology*; D012119:Respiration; D014939:Work of Breathing