The Vertebrate Kidney Helps to Keep the Acidity of the Body

question 10

Multiple Choice

The vertebrate kidney helps to keep the acidity of the body fluids constant by varying the amount of hydrogen ions (H+) it secretes into the urine.You can confidently predict that this aspect of kidney function will be controlled by

• A)a hormone produced in the kidney itself.
• B)a positive feedback mechanism.
• C)a negative feedback mechanism.
• D)nerve impulses from the brain.

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