Lecture 38_Discussion from Week 8

Lecture 38_Discussion from Week 8 - Discussion(Friday...

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Discussion Friday – Week 6: Different types of ventilation Blood vs. Medium Flow and efficiency of oxygen uptake Relationship between changes in volume & changes in pressure How this relates to buccal vs. suction pump mechanisms of ventilation Graham’s Law, Henry’s Law & Modified Fick’s Law for diffusion of gases Skeletal vs. Cardiac Muscle Differences Feedback (Direct vs 1 st order etc.) Quiz
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Orientation of Medium and Blood Flow Figure 9.6a–c NonSdirectional (a & b) and Tidal Ventilation (c)
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Orientation of Medium and Blood Flow Figure 9.6d–f With unidirectional ventilation, the blood can flow in three ways relative to the flow of the medium
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Crosscurrent exchange in bird lungs Countercurrent exchange in fish gills Gill surface Fish can move water across gills by either Ram Ventilation or Opercular Buccal Pumping
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