In lungs there is definite exchange of ions between RBC and plasma. Re...
Explanation:
Exchange of Ions in Lungs:
- In the lungs, there is a definite exchange of ions between red blood cells (RBCs) and plasma.
Removal of CO2 from Blood:
- The removal of CO2 from the blood involves the process of chloride shift.
Influx of Cl^- into RBC:
- During the chloride shift, there is an influx of chloride ions (Cl^-) into the RBCs.
- This influx of chloride ions into RBCs helps in exchanging bicarbonate ions (HCO3^-) out of the RBCs in order to maintain charge balance.
- The bicarbonate ions are then transported back into the plasma where they combine with hydrogen ions to form carbonic acid, which eventually breaks down into CO2 and water.
Efflux of H+ ions from RBC:
- As a result of the chloride shift, there is an efflux of hydrogen ions (H+) from the RBCs into the plasma.
- This process helps in maintaining the pH balance in the blood by removing excess hydrogen ions.
Therefore, the correct answer is option 'c) Influx of Cl^- into RBC', as it plays a crucial role in the removal of CO2 from the blood through the process of chloride shift in the lungs.
In lungs there is definite exchange of ions between RBC and plasma. Re...
Chloride shift is the movement of chloride ions from the plasma into red blood cells as a result of the transfer of carbon dioxide from tissues to the plasma, a process that serves to maintain blood pH. Bicarbonate and chloride ions are transported across the red blood cell membrane in opposite directions by the bicarbonate-chloride carrier protein.