-at rest=down a concentration gradient,oxygen moves in and carbon dioxide moves out by simple diffusion
-When active= by ventilation, air inhaled for mass flow of O2 in and air exhaled for mass flow of CO2 out
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A-level Biology Notes
Genel KurguTopics 1-4 of A-level Biology AQA New specification
How does gas exchange occur in tracheal system?
-at rest=down a concentration gradient,oxygen moves in and carbon dioxide moves out by simple diffusion
-When active= by ventilation, air inhaled for mass flow of O2 in and air exhaled for mass flow of CO2 out