6974265
Description
Quiz by Alexandra Bozan, updated more than 1 year ago
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Created by Alexandra Bozan
about 8 years ago
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Question 1
Question
As pH goes down, a:
Answer
-
Solution becomes more basic
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Solution’s hydrogen ion concentration decreases
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Solution becomes more acidic
-
Solution thickens
Question 2
Question
Blood is slightly alkaline:
Answer
- True
- False
Question 3
Question
The respiratory and urinary systems can serve as physiologic buffer systems:
Answer
- True
- False
Question 4
Question
Acidosis causes:
Answer
-
Hyperventilation
-
Hypoventilation
-
An increase in blood pH
-
Increase in K+ excretion
Question 5
Question
Respiratory mechanisms are much more effective in expelling hydrogen ions than are urinary mechanisms:
Answer
- True
- False
Question 6
Question
Which of the following organs is considered the most effective regulator of blood carbonic acid levels:
Answer
-
Kidneys
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Intestines
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Lungs
-
Stomach
Question 7
Question
In renal compensation of acidosis:
Answer
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H+ secretion increases; bicarbonate reabsorption increases
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H+ secretion increases; bicarbonate reabsorption decreases
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H+ secretion decreases; bicarbonate secretion increases
-
H+ secretion decreases; bicarbonate reabsorption increases
Question 8
Question
Which of the following accept H+ in water:
Answer
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Acids
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Bases
-
Salts
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Sugars
Question 9
Question
Maintenance of body fluid pH is the result of:
Answer
-
Operation of various buffer systems
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Response of respiratory system
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Response of urinary system
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All of the above
Question 10
Question
When normal buffer mechanisms are stressed by excessive numbers of H+ ions, which of the following will result:
Answer
-
Acidosis
-
Alkalosis
-
Neither of these
Question 11
Question
With each expiration, which substances leave the body?
Answer
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a. CO2
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b. H2O
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c. O2
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d. Both a and b
Question 12
Question
Which of the following substances releases H+ in water
Answer
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Acids
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Bases
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Salts
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Sugars
Question 13
Question
Which of the following is NOT a buffer system:
Answer
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Bicarbonate buffer system
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Phosphate buffer system
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Protein buffer system
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NaCl buffer system
Question 14
Question
A falling blood pH and a rising concentration of carbon dioxide, both due to emphysema indicate
Answer
-
Acidosis
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Alkalosis
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Neither of these
Question 15
Question
Carbon dioxide present In venous blood causes it to become slightly more basic than arterial blood
Answer
- True
- False
Question 16
Question
Chemical buffers are fast acting
Answer
- True
- False
Question 17
Question
An increase in blood pH above normal (alkalosis) causes hypoventilation
Answer
- True
- False
Question 18
Question
What happens as blood flows through lung capillaries
Answer
-
Carbon dioxide in blood decreases
-
H+ in blood decreases
-
pH decreases
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all of these
Question 19
Question
Substances that are present in the plasma that prevent drastic changes in pH of body fluids
Answer
-
Buffers
-
Inhibitors
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Accelerators
-
Activators
Question 20
Question
High CO2 levels in body fluids will result in the formation of carbonic acid as CO2 readily reacts with
Answer
-
oxygen
-
water
-
carbonic acid
-
carbon monoxide
-
sodium chloride
Question 21
Question
Which of the following describes the pH of blood
Answer
-
7.21-7.49
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7.00-7.20
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7.35-7.45
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7.50-7.77
Question 22
Question
Mr. B’s plasma pH is determined to be 7.2. Which of the following might you expect to observe indicating compensation is occurring:
Answer
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An increase in respiration rate
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A decrease in respiration rate
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No change in respiration rate
Question 23
Question
If the H+ concentration of blood increases, bicarbonate ions in the plasma act as buffers by:
Answer
-
Removing excess H+ from plasma
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Releasing H+ into plasma
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Combining with Cl- ions
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None of the above
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