The most important chemical regulator of respiration is question 2 options: carbon dioxide. sodium ions. potassium ions. oxygen. nitrogen.

CARBON DIOXIDE is the most important chemical regulator of respiration. Respiration primarily is the process of gas (carbon dioxide and oxygen) exchange between the air and the person's blood. There is a signal to increase ventilation when: there is to much carbon dioxide in the blood and if there is a decrease in the pH levels of the blood.

Another important chemical regulator is oxygen. There is a signal to increase ventilation when there is a drop of oxygen levels in the body.

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