Which of the Following Statements About the Role of the Respiratory

question 79

Multiple Choice

Which of the following statements about the role of the respiratory system in maintenance of blood pH is not true?

• A)Increasing the breathing rate rids the body of hydrogen ions because more carbon dioxide is breathed out.
• B)The respiratory center in the medulla oblongata increases the breathing rate if the hydrogen ion concentration of the blood rises.
• C)The lungs are able to rid the body of a wide variety of acidic and basic substances,thereby directly adjusting the pH of the blood.
• D)Breathing readjusts the proportion of carbonic acid and bicarbonate ions in the blood.
• E)When the buffer system of the blood is overwhelmed by an acidic or basic substance,the respiratory center adjusts the breathing rate to compensate.

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