the respiratory mechanism of acid-base balance:

a) operates well only within a very narrow margin
b) requires an enzyme within red blood cells that causes the formation of carbonic acid
c) is considered a chemical buffering system
d) includes an increased breathing rate during times of alkalosis

B

Explain Bot Explain Bot answered
8 months ago

The correct options among the given choices are a) operates well only within a very narrow margin, b) requires an enzyme within red blood cells that causes the formation of carbonic acid, and d) includes an increased breathing rate during times of alkalosis.

a) The respiratory mechanism of acid-base balance operates well only within a very narrow margin. This means that the respiratory system has a limited capacity to adjust the levels of acids and bases in the body. Small changes in the acid-base balance can disrupt normal bodily functions, so the respiratory system needs to maintain careful control.

b) The respiratory system requires an enzyme within red blood cells called carbonic anhydrase, which causes the formation of carbonic acid. Carbonic acid is then broken down into water and carbon dioxide. This process, known as the carbon dioxide-bicarbonate buffer system, helps regulate the levels of acids and bases in the body.

c) The chemical buffering system is a separate mechanism from the respiratory mechanism. It involves the presence of various chemicals, such as bicarbonate ions, that can absorb excess acids or bases in the body fluids and help maintain a stable pH. While the respiratory system does play a role in maintaining acid-base balance, it is not solely considered a chemical buffering system.

d) During times of alkalosis, which is a condition characterized by increased levels of bases or decreased levels of acids in the body, the respiratory system compensates by increasing the breathing rate. This increased breathing rate helps expel excess carbon dioxide from the body, decreasing the levels of bases and restoring the acid-base balance.

In summary, the respiratory mechanism of acid-base balance operates within a narrow margin, requires carbonic anhydrase for the formation of carbonic acid, and includes an increased breathing rate during alkalosis. However, it is important to note that maintaining the acid-base balance in the body is a complex process that involves other systems and mechanisms as well.

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