Biology 2601A/B Lecture Notes - Lecture 9: Lake Erie, Fick'S Laws Of Diffusion, Total Pressure
6 Mar 2018
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Physiological processes: many physiological process depend on the exchange of oxygen (o2), carbon dioxide (co2) and water vapour, between the external environment and the organism, among components in the organism. Helping diffusion: both use convection; which means movement of a fluid (wind would be a form of convection) So the heart pumps the blood around the circulatory system to the baby toe: where it diffuses into the baby toe, 2 step diffusion, diffusion from lungs/gill to blood/hemolymph, then diffusion to systemic tissue cells. Systemic tissues - will be using the oxygen. ~400 ppm: way less co2 than there is o2, cold seawater, ~0. 8% o2 in solution (i. e. dissolved, this is when its really cold - this is when there is the most dissolved oxygen in the water. Partial pressure of gas x: know for midterm** Lower water temperatures can hold more dissolved oxygen.
