respiratory 5-Haemoglobin and gas transport in the blood

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1. what's the Haldane effect?

  • CO2 and hemoglobin bind in a reversible reaction, especially when Hb-O2 levels are low
  • O2 and hemoglobin bind in a reversible reaction, especially when Hb-O2 levels are low
  • CO2 and hemoglobin bind in a reversible reaction, especially when Hb-CO2 levels are low
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2. Binds to Hb heme group 200 times more strongly than O2
Poisoning from it can be treated by administering pure O2

  • Carbon monoxide
  • Carbon Dioxide

3. Fetal Hb differs from adult Hb in structure & has a WHAT affinity for O2
When pO2 is low, can carry more O2
Maternal blood in placenta has low O2 saturation
O2 readily transferred from maternal to fetal Hb

  • HIGHER
  • LOWER

4. As acidity increases, O2 affinity for Hb decreases
H+ binds to hemoglobin & alters it
O2 left behind in needy tissues
what's this effect called

  • Bohr effect.
  • Dalton effect
  • Henry effect
  • Boyle effect

5. As pCO2 rises with exercise, pH decreases and WHAT is released more easily
CO2 converts to carbonic acid & becomes H+ and bicarbonate ions & lowers pH.

  • O2
  • CO2
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