Diffusion and convection in lungs and gills.
D000818:Animals; D001784:Blood Gas Analysis; D004058:Diffusion; D005880:Gills / Q000502:physiology*; D008168:Lung / Q000502:physiology*; D008433:Mathematics; D008566:Membranes / Q000502:physiology; D010100:Oxygen / Q000097:blood; D010313:Partial Pressure; D011650:Pulmonary Alveoli; D011652:Pulmonary Circulation; D012119:Respiration; D014692:Ventilation-Perfusion Ratio
D010100:Oxygen