While chemical buffer systems like the bicarbonate-carbonic acid buffer system are primary lines of defense in preventing ph imbalances, what are other organs are associated with this defense?
a. lung and kidneys
b. lungs and stomach
c. lungs and liver
d. lungs and intestinal tract

Answer:

Lung and Kidneys are associated with this defence.

Explanation:

An aqueous solution that resists change because of the addition of an acid or base solution is known as a buffer. Thus, it comprises of conjugate base and a weak acid. The bicarbonate buffer system is the one that is associated with the respiratory system.

To maintain the pH of  and duodenum this buffer system balances carbonic acids, bicarbonate ions and carbon dioxide. It serves to neutralises gastric in the stomach.

dynamic equilibrium is the answer.