When central chemoreceptors detect a drop in the pH of the cerebrospinal fluid,
A. medullary respiratory centers trigger an increase in rate and depth of breathing.
B. medullary respiratory centers trigger a decrease in rate and depth of breathing.
C. pontine respiratory centers trigger a decrease in rate and depth of breathing.
D. the vagus and phrenic nerves stimulate decreased production of the catalyst carbonic anhydrase.
A
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