The regulating organ of the rate and depth of breathing is the

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Quizplus · Accepted Answer

The brain is responsible for regulating the rate and depth of breathing. Specifically, the medulla oblongata in the brainstem monitors the level of carbon dioxide in the blood and sends signals to the diaphragm and other respiratory muscles to adjust the breathing rate and depth accordingly. The lungs and diaphragm are important respiratory organs, but they do not regulate breathing on their own. The liver is not directly involved in respiratory regulation.

The Regulating Organ of the Rate and Depth of Breathing