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OCR: Homeostasis: Respiratory Regulation of Acid -Base Balance (a)An between equilibrium carbon existe aCirculation Erythrocyte carbonic acid HO +CO and bicarbonate and hydrogen ions within anhydrast erythrocytes. Ir erythrocytes carbon reacts with b)Lungs DH -Decreased (c)Kidney Decreased water to form carbonic Respiratory acid. An enzyme center in carbonic anhydrase, brain sten catal yzes the reaction. Carbonic acid then dissociates form hydrogen ions and bicarbonate ions An equilibrium exists Increased that an increase respiration rate carbon dioxide causes ano depth more carbonic acid formation and decrease in carbon causes some of the carbonic acid Increased CO. given off Increased rate ofH secretion to dissociate to form carbon and (b}A decreased pH and increased PCO. (c)A decrease in pH ...