Final answer:
When blood is too acidic, more bicarbonate is released into the bloodstream to help neutralize the excess acidity.
Step-by-step explanation:
When blood is too acidic, more bicarbonate is released into the bloodstream. This is because bicarbonate, which acts as a buffer, helps to neutralize excess acidity in the blood. By releasing more bicarbonate, the body can restore the pH balance and maintain normal blood acidity levels.
For example, when carbon dioxide levels in the blood increase, it combines with water to form carbonic acid. This acid then dissociates into bicarbonate ions and hydrogen ions. The release of bicarbonate helps to decrease the overall acidity of the blood.