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BIOL 1102 Exam Two

Gas Exchange Systems

QuestionAnswer
What do bony fish use to maximize gas exchange coutnercurrent flow
How does partial pressure of oxygen work on gills constant water flow maximizes PO2 on the external gill surfaces and blood circulation minimizes PO2 on the internal surfaces
What are lamellae gill filaments that are covered by folds
What is ventilation active movement of respiratory medium over the gas exchange sufaces; it has the effect of increasing Pi, in humans this means movement of air into and out of the lungs
What is perfusion active circulation of blood over the gas exchange surfaces; it has the effect of decreasing P2
What is the Bohr effect higher concentration of CO2 -> blood pH becomes lower -> hemoglobin saturation reduces -> more oxygen dissociates from the hemoglobin
Created by: goldengalleon
 

 



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