The main buffer system in human blood is:
Correct answer: A. Carbonic acid-bicarbonate
- A. Carbonic acid-bicarbonate
- B. Phosphate
- C. Protein buffer
- D. All of the above
Explanation
The carbonic acid-bicarbonate system maintains blood pH by neutralizing acids or bases.
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About Homeostasis
Homeostasis maintains a stable internal environment through the kidney and urinary system, thermoregulation and excretion. The kidney topics include filtration, selective reabsorption, urine formation and water balance, while thermoregulation involves sweating, vasodilation, vasoconstriction and hormonal control; excretion is different from egestion, which removes undigested food.
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