11 Jun Penn State SC 444- Which is true in respiratory alkalosis
Question
Which is true in respiratory alkalosis?
A combined effect of respiratory and renal compensations is decreased PCO2.
The hydrogen ions are also replaced by the bicarbonate reserve.
Stimulation of arterial and CSF chemoreceptors results in a decreased respiratory rate.
The condition of respiratory alkalosis develops if the rate of CO2 elimination exceeds the rate of CO2 generation.
Which one of the following statements concerning respiratory alkalosis is true?
Buffer systems other than the carbonic acid-bicarbonate system accept H+ ions.
Most cases of respiratory alkalosis are related to anxiety.
Hypoventilation causes decreased PCO2.
Lower PCO2 results in a decrease in plasma pH.
Which is true regarding respiratory acidosis?
Elevated PCO2 results in an increase in plasma pH.
Alveolar and plasma PCO2 decreases when respiratory activity does not keep pace with the rate of CO2 generation.
It is a very uncommon, but rarely severe, condition.
It develops if the rate of CO2 generation exceeds the rate of CO2 removal.
During metabolic alkalosis, the renal tubule cells:
respond by secreting hydrogen ions.
transport the hydrogen ions by diffusion into the ECF.
pump HCO3- into the tubular fluid in exchange for hydrogen ions.
secrete bicarbonate ions into the tubular fluid.
Which statement accurately describes responses to metabolic acidosis?
Conversion of water to carbonic acid occurs.
The renal response to acidosis involves secreting HCO3-.
The renal response to acidosis involves absorbing H+ ions.
The respiratory response to acidosis involves lowering the PCO2.
In the renal response to metabolic acidosis:
the renal tubule cells increase the concentration of bicarbonate ions in the ECF.
the hydrogen ions exchanged for bicarbonate ions are excreted in the tubular fluid.
carbon dioxide generated by the tubule cell is added to the oxygen diffusing into the cell.
bicarbonate ions and sodium ions are removed from the ECF.
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