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3 mechanisms of co2 transport in blood

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created 1 year ago by lfrenner
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LP 7 exam 3

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1

Three ways CO2 is transported in the blood

  1. dissolved in plasma
  2. attached to hemoglobin
  3. by way of bicarbonate ion
2

About how much carbon dioxide is dissolved and carried in plasma?

7% is dissolved in plasma

3

About how much carbon dioxide is transported by hemoglobin

about 15-25% is transported by hemoglobin

4

The hemoglobin compound that transports CO2 is called

Carbaminohemoglobin

5

About how much CO2 is transported by the bicarbonate ion

Up to 75%

6

How is CO2 transported in the blood by way of the bicarbonate ion.

  1. Diffused into cell
  2. combines w H2O and carbonic anhydrase to form carbonic acid (CO2+H2O -->H2CO3)
  3. Dissociated into H+ and Bicarbonate ions HCO- 3
  4. HCO- 3 moves out thru protein channel and Cl- ions enter to maintain stability
  5. The H+ binds with hemoglobin

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