When chemoreceptors detect an increase in hydrogen ion concentration,centers in the nervous system respond by sending out impulses that _____ heart rate and cause _____.

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When chemoreceptors detect an increase in hydrogen ion concentration, it usually indicates an increase in carbon dioxide levels, signaling the body to increase heart rate and cause vasoconstriction to improve oxygen delivery and carbon dioxide removal.

When Chemoreceptors Detect an Increase in Hydrogen Ion Concentration,centers in the Nervous