Straighterline Anatomy and Physiology 2 BIO202
Topic 10: Water, Electrolyte, and Acid–Base
Balance Quiz 2023
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BIO202_MH_V3
Topic 10: Water, Electrolyte, and Acid–Base Balance
Started on Saturday, June 10, 2023, 3:49 PM
State Finished
Completed on Saturday, June 10, 2023, 4:35 PM
Time taken 45 mins 33 secs
Overdue 5 mins 33 secs
Grade 38.00 out of 40.00 (95%)
Question 1
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Which of the following can play a role in buffering the pH of urine?
Select one:
a. ammonia
b. bicarbonate ions
c. phosphate ions
d. ammonia and bicarbonate ions
e. ammonia, bicarbonate ions and phosphate ions
Question 2
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Sodium homeostasis leads to the homeostasis of ________________.
Select one:
a. chloride
b. hydrogen
c. calcium
d. potassium
e. magnesium
Question 3
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Which of the following statements concerning potassium ions is false?
Select one:
a. An increase in the extracellular potassium ion concentration leads to depolarization.
b. Potassium ions are secreted into the nephron by the distal convoluted tubule.c. When aldosterone levels are high, potassium secretion is low.
d. Aldosterone secretion is stimulated by high blood levels of potassium ions.
e. None of these choices is false.
Question 4
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An increase in parathyroid hormone levels results in
Select one:
a. increased rate of bone resorption.
b. increased rate of vitamin D degradation.
c. increased concentration of potassium ions in the urine.
d. increased rate of calcium ion excretion by the kidneys.
e. decreased levels of blood calcium.
Question 5
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Stimulus for the secretion of parathyroid hormone is a decrease in serum
Select one:
a. potassium levels.
b. calcium levels.
c. calcitonin levels.
d. phosphate levels.
e. sodium levels.
Question 6
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Parathyroid hormone effects the
Select one:
a. bones, heart, and blood.
b. kidney, liver, and spleen.
c. intestine, kidneys, and bone.
d. liver, stomach, and small intestine.
e. stomach, pancreas, and bone.
Question 7
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Case study:
You have just admitted Mary Roberts, a 70-year-old woman, to the hospital for GI bleeding. Her
blood pressure is 130/80, pulse 80/min and irregular, respirations 18/min, and temperature 99.2.
Mrs. Roberts denies pain at this time although she appears anxious and very pale. Her medical
history includes lung cancer that was diagnosed two weeks ago, peptic ulcer disease with reflux
esophagitis, and "fluid retention". Admission lab work shows a plasma Na+ of 152 mEq/L and K+ of
2.8 mEq/L.
Which of the following regulatory mechanisms would be stimulated as a result of the increased
osmolality that results from a Na+ level of 152 mEq/L?
Select one:
a. increased urine output
b. an increased release of ADH
c. an increase in renin production
d. an increase in the secretion of aldosteronee. a decreased release of ADH
Question 8
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Question text
Case study:
You have just admitted Mary Roberts, a 70-year-old woman, to the hospital for GI bleeding. Her
blood pressure is 130/80, pulse 80/min and irregular, respirations 18/min, and temperature 99.2.
Mrs. Roberts denies pain at this time although she appears anxious and very pale. Her medical
history includes lung cancer that was diagnosed two weeks ago, peptic ulcer disease with reflux
esophagitis, and "fluid retention". Admission lab work shows a plasma Na+ of 152 mEq/L and K+ of
2.8 mEq/L.
The increase in extracellular osmolality would cause
Select one:
a. water to move out of the cells.
b. water to move into the cells.
c. no change in the net movement of water into or out of the cells.
Question 9
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Which of the following represents the largest fluid compartment?
Select one:
a. Intracellular fluid
b. Extracellular fluid
c. Interstitial fluid
d. Blood plasma
e. LymphQuestion 10
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A decrease in plasma osmolality would increase
Select one:
a. ADH production.
b. plasma sodium levels.
c. renin production.
d. urine production.
e. thirst.
Question 11
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pH
Select one:
a. increases with acidity.
b. is measured on a scale of 0 to 10.
c. is a measure of the hydrogen ion concentration.
d. reflects sodium content of body fluids.
e. is not related to amounts of carbon dioxide in the body.
Question 12
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The most abundant cation in the extracellular fluid is _________________.
Select one:
a. sodium
b. potassium
c. chloride
d. calcium
e. magnesium
Question 13
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Under normal conditions, most water loss from the body is through the
Select one:
a. skin.
b. kidneys.
c. lungs.
d. GI tract.
e. sweat.
Question 14
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Chemicals that function to minimize changes in the pH of body fluids are calledSelect one:
a. buffers.
b. inhibitors.
c. accelerators.
d. activators.
e. stabilizers.
Question 15
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Which of the following is NOT a buffer system of the body?
Select one:
a. bicarbonate buffer system
b. phosphate buffer system
c. protein buffer system
d. NaCl buffer system
e. hemoglobin buffer
Question 16
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Which of the following substances releases hydrogen ions into a solution?
Select one:
a. acids
b. bases
c. salts
d. glucosee. water
Question 17
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The stimulus for secretion of atrial natriuretic hormone is increased
Select one:
a. blood osmolality.
b. aldosterone production.
c. blood pressure in atria of heart.
d. blood pressure in kidney's afferent arterioles.
e. blood pressure in the ventricles of the heart.
Question 18
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Water moves back and forth across the plasma membrane by the process of
Select one:
a. osmosis.
b. filtration.
c. facilitated diffusion.
d. active transport.
e. endocytosis.
Question 19
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One difference between the plasma and interstitial fluid is that the plasma has significantly more
_____ than interstitial fluid.
Select one:
a. protein
b. bicarbonate
c. chloride
d. water volume
e. hydrogen ions
Question 20
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Hyperventilation of the lungs can lead to ______________________.
Select one:
a. Respiratory acidosis
b. Respiratory alkalosis
c. Metabolic acidosis
d. Metabolic alkalosis
e. Respiratory shock [Show Less]