In lungs,there is a definite exchange of ions | vedclass

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(B) In the lungs,the partial pressure of $CO_2$ $(pCO_2)$ is low,which triggers the reversal of the chloride shift (Hamburger phenomenon).$HCO_3^-$ io

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Influx of $HCO_3^-$ ions into $RBC$

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(B) In the lungs,the partial pressure of $CO_2$ $(pCO_2)$ is low,which triggers the reversal of the chloride shift (Hamburger phenomenon).$HCO_3^-$ ions move from the plasma into the $RBC$ in exchange for $Cl^-$ ions moving out of the $RBC$ into the plasma.Inside the $RBC$,$HCO_3^-$ combines with $H^+$ to form $H_2CO_3$,which is then converted into $H_2O$ and $CO_2$ by the enzyme carbonic anhydrase.This $CO_2$ then diffuses out of the $RBC$ and into the alveoli to be exhaled.Therefore,the removal of $CO_2$ involves the influx of $HCO_3^-$ ions into the $RBC$.

In lungs,there is a definite exchange of ions between $RBC$ and plasma. The removal of $CO_2$ from the blood involves:

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