Reversible Reaction Pathways Flashcards

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1
Q

How does gas exchange happen at respiring Tissues?

A
  • Respiring cells releases carbon dioxide
  • CO2 diffuses into blood plasma
  • CO2 diffuses into ethroyctes
  • CO2 an water react to form carbonic acid
  • reaction catalysed by carbon anhydrase
  • carbon acid dissociates to form hydrogen and hydrogen carbonate ions
  • hydrogen carbonate ions diffuses into the blood plasma
  • chloride ions diffuse into ethrocytes to replace hydrogen ions - chloride shift
  • the dissociate hydrogen ions reacts with haemoglobinic acid and the oxygen is releases
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1
Q

How does gas exchange happen at the lungs?

A
  • Oxygen diffuses from the alvelous into erythrocytes down a concentration gradient
  • oxygen reacts with haemoglobinic acid to release hydrogen ions and produce oxyhaemoglobin
  • chloride ions diffuse back
    hydrogen carbonate ions and hydrogen reacts to form carbonic acid is broken down into water and carbon dioxide
  • catalysed by anhydrase
  • carbin dioxide diffuses out of the blood plasma into the alvelous
  • carbon dioxide is breathed out.
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