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jansport backpack philippines Superbreak Nken Mini Fjallraven Kanken National Eagle Center Color:Metallic Silver/Lime Green HB
Nken Mini Fjallraven Kanken Black Mini Backpack Fjällräven Kånken Re-Kånken Mini Black
E N D Presentation Transcript Respiratory System 1 Fish Amphibian Respiratory efficiency • R = rate of diffusion R = DA(Δp/d) • D = diffusion constant (of the medium) • Temperature • Density • A = surface area • Δp = partial pressure differential across membrane • d = distance (thickness) Conditions for high R • Large respiratory A • Short d external medium | blood • Flow rates trade-off: Fast flow – gradient replacement Slow flow - diffusion Other important “adjustable” features • Ventilation rates • Amount of respiratory A in use at any one time • What happens if too much A
National Eagle Center
Color:Metallic Silver/Lime Green HB
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