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___________ is the major cation found in extracellular fluid, and therefore regulation of this is the critical factor in the maintenance of body fluid volume.


A) Sodium
B) Chloride
C) Potassium
D) Phosphorus

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

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A

When following the urinary system, the renal pelvis rapidly diminishes in caliber and merges into the ______.Each of these descends in the abdomen alongside the vertebral column to join the ______, which provides temporary storage for urine, which is eventually voided through the _____ to the exterior.


A) urethra, kidney, ureter
B) ureter, kidney, urethra
C) ureter, bladder, urethra
D) urethra, bladder, ureter

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

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C

Body pH is controlled by:


A) acid-base buffers
B) the lungs
C) the kidneys
D) all of the above

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

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In stage 4 of chronic kidney disease, the glomerular filtration rate is:


A) between 15 and 30
B) between 30 and 60
C) between 60 and 90
D) greater than 90

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

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Normal urine output is approximately _____________ per day.


A) 500 mL
B) 1000 mL
C) 1500 mL
D) 2500 mL

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

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The kidney is able to carry out its complex functions because approximately ______of the volume of blood pumped by the heart into the systemic circulation is circulated through the kidneys.Therefore, the kidneys, which constitute about ______ of total body weight, receive ______ of the cardiac output.


A) 25%, 0.5%, 1/4
B) 0.5%, 25%, 1/4
C) 25%, 0.5%, 1/2
D) 50%, 25%, 1/2

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

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Each kidney is made up of approximately 1 million nephrons.The nephron begins with the ______.This is surrounded by ______, which is formed by the blind, dilated end of the ______.


A) Bowman's capsule, glomerulus, renal tubule
B) renal tubule, Bowman's capsule, glomerulus
C) renal tubule, glomerulus, Bowman's capsule
D) glomerulus, Bowman's capsule, renal tubule

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

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A small fraction of filtered sodium, chloride, and water is reabsorbed in _____________.


A) the ascending loop of Henle
B) the descending loop of Henle
C) the proximal tubule
D) the distal convoluted tubule

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

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In acute glomerulonephritis, BUN will be ______, serum creatinine levels will be ______, and the GFR will be ______.


A) decreased, increased, decreased
B) increased, decreased, increased
C) decreased, decreased, increased
D) increased, increased, decreased

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

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When the human body needs to conserve water, as in dehydration, the concentration mechanism operates maximally, and the urine osmolality will change to about ______.When there is excess water in the body, urine flow ______, and the diluting mechanism can change urine osmolality to approximately ______.


A) 50 mOsm/kg, decreases, 1200 mOsm/kg
B) 1200 mOsm/kg, increases, 50 mOsm/kg
C) 1200 mOsm/kg, decreases, 1200 mOsm/kg
D) 50 mOsm/kg, increases, 1200 mOsm/kg

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

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Fanconi syndrome is a group of renal defects resulting in: 1) glucosuria 2) aminoaciduria 3) hypophosphatemia 4) renal tubular acidosis


A) 1, 2, 3, 4
B) 1, 2, 4
C) 2, 3, 4
D) 1, 3, 4

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

Correct Answer

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All filtered glucose and most of the filtered amino acids are normally reabsorbed in ___________.


A) the ascending loop of Henle
B) the descending loop of Henle
C) the proximal tubule
D) the distal convoluted tubule

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

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Underneath the capsule of fibrous tissue that encloses the kidney lies the renal cortex, which contains the ______ and the ______.


A) collecting ducts, glomeruli
B) glomeruli, renal tubules
C) tubules, collecting ducts
D) none of the above

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

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B

Potassium is freely filtered at the ______, and ______ occurs throughout the nephron, except in the ______.


A) descending loop of Henle, active tubular reabsorption, glomerulus
B) ascending loop of Henle, active tubular reabsorption, glomerulus
C) glomerulus, active tubular reabsorption, descending loop of Henle
D) glomerulus, active tubular reabsorption, ascending loop of Henle

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

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The following are findings in a microscopic urinalysis.What is the laboratory diagnosis? 0 to 1+ protein 0 to 10 RBCs per high power field >30 WBCs per high power field 2+ bacteria Granular white blood cell casts


A) glomerulonephritis
B) nephrotic syndrome
C) pyelonephritis
D) these are normal urine findings

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

Correct Answer

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Which of the following is an/are important function(s) of the kidney?


A) regulation of acid-base balance
B) hormonal function
C) protein conservation
D) all of the above

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

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The following are findings in a microscopic urinalysis.What is the laboratory diagnosis? 4+ protein 0 to 10 RBCs per high power field 0 to 5 WBCs per high power field 0 bacteria Oval fat bodies Hyaline casts


A) glomerulonephritis
B) nephrotic syndrome
C) pyelonephritis
D) these are normal urine findings

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

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