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6. An animal experiences an acid-base imbalance in the arterial blood that results in acidosis. Toincrease pH toward normal, which direction would the ventilation rate be changed and what wouldbe the corresponding change in arterial PCO2?A. Ventilation rate increases, arterial PCO2 increasesB. Ventilation rate increases, arterial PCO2 decreasesC. Ventilation rate decreases, arterial PCO2 increasesD. Ventilation rate decreases, arterial PCO2 decreasesE. None of the above

Question

  1. An animal experiences an acid-base imbalance in the arterial blood that results in acidosis. Toincrease pH toward normal, which direction would the ventilation rate be changed and what wouldbe the corresponding change in arterial PCO2?A. Ventilation rate increases, arterial PCO2 increasesB. Ventilation rate increases, arterial PCO2 decreasesC. Ventilation rate decreases, arterial PCO2 increasesD. Ventilation rate decreases, arterial PCO2 decreasesE. None of the above
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Solution

The correct answer is B. Ventilation rate increases, arterial PCO2 decreases.

Here's the step-by-step explanation:

  1. Acidosis is a condition where the body's fluids contain too much acid. It occurs when the body's arterial blood gas shows a decrease in pH.

  2. The body responds to acidosis by increasing the ventilation rate. This is because breathing faster and deeper increases the amount of carbon dioxide (CO2) that is expelled from the body.

  3. As the ventilation rate increases, the amount of CO2 in the arterial blood (arterial PCO2) decreases. This is because the increased ventilation is removing more CO2 from the body.

  4. The decrease in arterial PCO2 helps to increase the pH of the blood, moving it closer to the normal range and helping to correct the acidosis.

So, in response to acidosis, the ventilation rate would increase and the arterial PCO2 would decrease.

This problem has been solved

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