6974265
Descripción
Test por Alexandra Bozan, actualizado hace más de 1 año
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Creado por Alexandra Bozan
hace alrededor de 8 años
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Pregunta 1
Pregunta
As pH goes down, a:
Respuesta
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Solution becomes more basic
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Solution’s hydrogen ion concentration decreases
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Solution becomes more acidic
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Solution thickens
Pregunta 2
Pregunta
Blood is slightly alkaline:
Respuesta
- True
- False
Pregunta 3
Pregunta
The respiratory and urinary systems can serve as physiologic buffer systems:
Respuesta
- True
- False
Pregunta 4
Pregunta
Acidosis causes:
Respuesta
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Hyperventilation
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Hypoventilation
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An increase in blood pH
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Increase in K+ excretion
Pregunta 5
Pregunta
Respiratory mechanisms are much more effective in expelling hydrogen ions than are urinary mechanisms:
Respuesta
- True
- False
Pregunta 6
Pregunta
Which of the following organs is considered the most effective regulator of blood carbonic acid levels:
Respuesta
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Kidneys
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Intestines
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Lungs
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Stomach
Pregunta 7
Pregunta
In renal compensation of acidosis:
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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
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H+ secretion decreases; bicarbonate reabsorption increases
Pregunta 8
Pregunta
Which of the following accept H+ in water:
Respuesta
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Acids
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Bases
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Salts
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Sugars
Pregunta 9
Pregunta
Maintenance of body fluid pH is the result of:
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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
Pregunta 10
Pregunta
When normal buffer mechanisms are stressed by excessive numbers of H+ ions, which of the following will result:
Respuesta
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Acidosis
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Alkalosis
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Neither of these
Pregunta 11
Pregunta
With each expiration, which substances leave the body?
Respuesta
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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
Pregunta 12
Pregunta
Which of the following substances releases H+ in water
Respuesta
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Acids
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Bases
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Salts
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Sugars
Pregunta 13
Pregunta
Which of the following is NOT a buffer system:
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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
Pregunta 14
Pregunta
A falling blood pH and a rising concentration of carbon dioxide, both due to emphysema indicate
Respuesta
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Acidosis
-
Alkalosis
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Neither of these
Pregunta 15
Pregunta
Carbon dioxide present In venous blood causes it to become slightly more basic than arterial blood
Respuesta
- True
- False
Pregunta 16
Pregunta
Chemical buffers are fast acting
Respuesta
- True
- False
Pregunta 17
Pregunta
An increase in blood pH above normal (alkalosis) causes hypoventilation
Respuesta
- True
- False
Pregunta 18
Pregunta
What happens as blood flows through lung capillaries
Respuesta
-
Carbon dioxide in blood decreases
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H+ in blood decreases
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pH decreases
-
all of these
Pregunta 19
Pregunta
Substances that are present in the plasma that prevent drastic changes in pH of body fluids
Respuesta
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Buffers
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Inhibitors
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Accelerators
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Activators
Pregunta 20
Pregunta
High CO2 levels in body fluids will result in the formation of carbonic acid as CO2 readily reacts with
Respuesta
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oxygen
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water
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carbonic acid
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carbon monoxide
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sodium chloride
Pregunta 21
Pregunta
Which of the following describes the pH of blood
Respuesta
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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
Pregunta 22
Pregunta
Mr. B’s plasma pH is determined to be 7.2. Which of the following might you expect to observe indicating compensation is occurring:
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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
Pregunta 23
Pregunta
If the H+ concentration of blood increases, bicarbonate ions in the plasma act as buffers by:
Respuesta
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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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