Acid-Base Balance-RESPIRATORY MECHANISM OF pH CONTROL

Question 1

True/False

Amount of blood carbon dioxide indirectly relates to amount of carbonic acid and therefore to concentration of H+

Answer 1

False

Amount of blood carbon dioxide DIRECTLY relates to amount of carbonic acid and therefore to concentration of H+

Question 2

With increased respirations, less carbon dioxide remains in blood, hence less carbonic acid and fewer H+; with decreased respirations, which means…………

Answer 2

more carbon dioxide remains in blood, hence more carbonic acid and more H+

Question 3

What are adjusted based on the pH of arterial blood?

Answer 3

Respirations are

Question 4

Some principles relating respirations and pH of body fluids. What are they? There are 4

Answer 4

Acidosis
Prolonged hyperventilation
Alkalosis
Prolonged hypoventilation

Question 5

True/False
Acidosis → hyperventilation → increases elimination of CO2 → decreases blood CO2 → decreases blood H2CO3 → decreases blood H+, that is, increases blood pH → tends to correct acidosis, that is, to restore normal pH

Answer 5

True

Question 6

By decreasing blood H+ excessively, may produce alkalosis. What is this?

Answer 6

Prolonged hyperventilation

Question 7

What causes hypoventilation, which tends to correct alkalosis by increasing blood CO2 and therefore blood H2CO3 and H+?

Answer 7

Alkalosis

Question 8

By eliminating too little CO2 causes increase in blood H2CO3 and consequently in blood H+, thereby may produce acidosis. What is this?

Answer 8

Prolonged hypoventilation