Gas Transport in the blood

1. What is 2,3, DPG? How is it produced in the red blood cell and how does it interact with haemoglobin? What is its relevance in altitude exposure, stored blood and anaemia. (95A1) (1991)
2. Explain how oxygen supply of organs is maintained during isovolaemic haemodilution (02A1)
3. Describe the ways in which CO2 is carried in the blood (99B5)
   Describe the role of haemoglobin in the carriage of carbon dioxide in the blood (97A3)
4. Explain the difference between perfusion limitation and diffusion limitation in the transfer of gas between alveolus and pulmonary capillary. Outline the factors that determine whether gas transfer is perfusion or diffusion limited. (03B12)
   Describe the factors that affect the transport of oxygen and carbon dioxide from the alveolus to the blood. (99A3) 
5. List the normal values for mixed venous blood gases and briefly explain the factors determining mixed venous oxygen tension.(1996)
   Briefly describe the factors that influence the partial pressure of oxygen in mixed venous blood (00A2)
   What factors influence the mixed venous CO2 tension. Briefly explain how these factors exert their influence. (1993)
6. Briefly explain how an oxygen debt arises and how the body deals with it (96B8)