Why does vomiting often cause a reduction in breathing rate?
a. Reduced breathing occurs to allow PCO2 to rise to aid in the increase in blood bicarbonate.
b. Reduced breathing causes an increase in PCO2 which lowers pH toward the setpoint after vomiting causes a loss in acid and rise in blood pH.
c. Reduced breathing causes a fall in PCO2 which lowers the pH, moving blood pH toward its homeostatic setpoint.
d. Reduced breathing causes a fall in blood PCO2, raising the pH, moving blood pH toward its homeostatic setpoint.
Answer: b. Reduced breathing causes an increase in PCO2 which lowers pH toward the setpoint after vomiting causes a loss in acid and rise in blood pH.
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