When the chemoreceptors in the _____ and _____ sense a decrease in levels of oxygen in the blood, they signal the respiratory control center to _____ the breathing rate.

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Anatomy refers to the internal and external structures of the body and their physical relationships, whereas physiology refers to the study of the functions of those structures.


1. When the chemoreceptors in the _____ and _____ sense a decrease in levels of oxygen in the blood, they signal the respiratory control center to _____ the breathing rate.