Allied Health A&P Ch. 22

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False

The physiological pH control mechanisms react more quickly to stabilize pH than do the chemical pH control mechanisms.

False

A person can develop acidosis of the blood even if the pH is above 7.

is an acid solution

A solution with a pH of 3

has 100 times more H+ ions than a solution with a pH of 2

A solution with a pH of 4

False

A solution with a pH of 5 has 100 times more hydrogen ions than a solution with a pH of 3.

True

A solution with a pH of 5 is considered an acid.

Both B and C

A solution with a pH of 9

is caused by an increase in base or a loss of acid

Blood alkalosis

lower concentration of carbon dioxide

Blood leaving the lungs has a ________ than blood entering the lungs.

False

Hyperventilation syndrome can cause metabolic alkalosis.

False

If a base were added to the buffer pair H2CO-NaHCO3, the concentraion of NaHCO3 would drop.

True

Maintaining acid base balance means keeping the concentration of hydrogen ions in body fluids relatively constant.

True

Stomach acid is the body fluid with the lowest pH.

True

The NaHCO3 buffer system buffers lactic acid.

Function of cellular enzymes

The function of H+ ions in the body is

True

The function of carbonic anhydrase is to convert carbon dioxide and water to carbonic acid.

the higher concentration of carbonic acid from cell metabolism

The slightly lower pH of venous blood compared with arterial blood comes primarily from

respiratory alkalosis

Which of the following is caused by H2CO3 deficit?

the buffers in the blood

Which of the following is considered a chemical pH control mechanism?

Both B and C above

Which of the following is considered a physiological pH control mechanism?


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