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Effects of hypokalemia include


A) muscle weakness.
B) acne.
C) sweating.
D) diabetes.

E) A) and D)
F) A) and C)

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Baby Britney develops a respiratory infection in both lungs. The infection causes an accumulation of fluid in her alveoli. Which of the following conditions will occur as a result?


A) Respiratory acidosis
B) Respiratory alkalosis
C) Metabolic acidosis
D) Metabolic alkalosis

E) A) and B)
F) B) and D)

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Sam has had two large bottles of water to drink today, about 1,500mL of water in total. He is concerned that he hasn't consumed the recommended average amount of water intake for the day. He should reach the daily average as long as he


A) tries not to urinate that day.
B) eats food containing at least 750mL of water.
C) stays out of the sun and doesn't sweat at all.
D) drinks another 250mL of water.

E) C) and D)
F) B) and D)

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Parathyroid hormone increases phosphate reabsorption from the renal tubules.

A) True
B) False

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A buffer system in blood involves


A) the chloride shift through the cell membranes.
B) deoxyhemoglobin generated in white blood cells.
C) phosphate buffer in the renal system.
D) hemoglobin binding hydrogen ions in red blood cells.

E) B) and D)
F) B) and C)

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Addison disease is characterized by


A) aldosterone deficiency and loss of extracellular sodium.
B) aldosterone deficiency and gain of extracellular sodium.
C) aldosterone excess and loss of extracellular sodium.
D) aldosterone excess and gain of extracellular sodium.

E) B) and D)
F) B) and C)

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A person is experiencing severe heartburn. To compensate for their pain, they take 9 sodium bicarbonate-based antacids, which is more than triple the recommended dosage. Which of the following is NOT a way the body can compensate to react to the pH-related condition this overdose will produce?


A) The kidneys reabsorb hydrogen ions and decrease their secretion into the urine.
B) The respiratory centers will cause an increased breathing rate and depth to release CO₂.
C) Dihydrogen phosphate in the extracellular environments will dissociate to release H⁺ ions.
D) In the blood, amino acid chains of structures like hemoglobin will release H⁺ ions from -COOH and -NH₃⁺ groups.

E) A) and D)
F) None of the above

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The part of the brain that helps regulate hydrogen ion concentrations is the ________ center.

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Which of the following most closely represents the percentage of water by weight in an adult male?


A) 35%
B) 45%
C) 55%
D) 65%

E) A) and D)
F) A) and C)

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What is water of metabolism?


A) Water that a person drinks after exercising
B) Water that is in food
C) A by-product of the oxidative metabolism of nutrients
D) Water consumed in beverages

E) A) and B)
F) C) and D)

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A county fair held a water-drinking contest where people competed to see who could drink the most water in a set amount of time. During the competition, a man drank three gallons of water in under an hour and a half. Unfortunately, this killed him several hours after he won the competition. The excessive water intake caused him to develop water intoxication, in which the electrolyte imbalance called ________ occurred.

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Marielle is very thirsty following her tennis game. She drinks for a few minutes, then stops. The stimulus to stop drinking comes from


A) distension of her stomach.
B) hormones secreted by stomach cells.
C) changes in intracellular fluid concentration.
D) changes in extracellular fluid concentration.

E) None of the above
F) All of the above

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Which of the following metabolic processes releases hydrogen ions to body fluids?


A) Respiratory compensation for metabolic acidosis
B) Aerobic respiration of glucose
C) Production of carbonic acid
D) Monohydrogen phosphate ions converting into dihydrogen phosphate

E) B) and D)
F) All of the above

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An arterial blood pH below 7.35 is called ________.

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The kidneys help to regulate the hydrogen ion concentration of body fluids by altering the rate at which hydrogen ions are secreted.

A) True
B) False

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You never feel thirsty even though your body frequently becomes dehydrated. Your doctor suspects that the problem might be an imbalance or abnormality in your brain. The doctor will want to do neuroimaging of your


A) thalamus.
B) hypothalamus.
C) midbrain.
D) medulla oblongata.

E) B) and D)
F) None of the above

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A county fair held a water-drinking contest where people competed to see who could drink the most water in a set amount of time. During the competition, a man drank three gallons of water in under an hour and a half. Unfortunately, this killed him several hours after he won the competition. What killed the man?


A) He consumed an amount of water that his body could not use. His body responded by trying to get rid of some of the water through respiratory perspiration, and he drowned.
B) The increase in water content stimulated his body to secrete lethal amounts of aldosterone.
C) The concentration of sodium in his body tripled and caused his nervous system to stop working.
D) His electrolytes became incredibly diluted, causing water to rush into cells and make them burst.

E) B) and D)
F) A) and D)

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Diabetes mellitus, in which fatty acids react to produce ketone bodies, leads to


A) respiratory acidosis.
B) respiratory alkalosis.
C) metabolic acidosis.
D) metabolic alkalosis.

E) None of the above
F) A) and C)

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Dehydration can be caused by


A) excessive water intake.
B) prolonged sleep deprivation.
C) prolonged vomiting or prolonged diarrhea.
D) obstruction of airways.

E) B) and D)
F) All of the above

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An important stimulus for the secretion of aldosterone is


A) increasing potassium ion concentration.
B) decreasing potassium ion concentration.
C) increasing sodium ion concentration.
D) increasing calcium ion concentration.

E) C) and D)
F) A) and C)

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