Decreased arterial pH (increased hydrogen ion concentration in the arterial blood) increases depth and frequency of respirations   Choose from the following:   (A) directly stimulating central chemoreceptors within the fourth ventricle of the medulla oblongata (B) directly stimulates the glomus cells of the aortic and carotid sinuses (C) both A and B

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Q: how does the chemoreceptor reflex work to compensate the increased arterial PCO2

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