An example of local control over breathing is ____
a. automated lung ventilation and perfusion adjustments to changing O2 levels in the blood
b. the aortic bodies signaling an increase in breathing rate when blood pH is acidic
c. refinement by the interneuron groups of the pons of contractions involved in inhalation and exhalation
d. the carotid bodies signaling an increase in breathing rate when O2 levels are low
e. the ventral group of interneurons signaling an increase in breathing rate and depth during exercise
ANSWER: a
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