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Unformatted text preview: 2 in the blood leaving the lungs where P O2 is 100 mm Hg? 5. Ignoring the Bohr shift (the effect of pH on the Hb binding curve), what percentage of the Hb binding sites are saturated in exercising tissues where P O2 is 30 mm Hg? How does the fact that there is more CO 2 released by exercising tissue affect the percentage of Hb saturation in exercising tissue vs. resting tissue? [Explain in terms of the plasma pH in exercising vs. resting tissue.] 6. What is the difference between open and closed circulatory systems? What advantages do closed systems have? In open systems what helps move haemolymph to and from the heart? 7. How is CO 2 transported in the blood? What enzymatically catalized reaction is occurs in red blood cells that facilitates the transport of CO 2 in blood plasma? What role does Hb play in the transport of CO 2 ? 8. How many circuits are there in the human circulatory system? What are they? What is the function of each circuit?...
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- Fall '08