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Eighty percent of nephrons in the human kidney are located in the ________ and have short nephron loops.

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The cells of the macula densa and the juxtaglomerular cells form the


A) renal corpuscle.
B) filtration membrane.
C) nephron loop (loop of Henle) .
D) juxtaglomerular complex.
E) afferent arteriole.

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

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The filtration of plasma takes place in the


A) nephron loop (loop of Henle) .
B) distal convoluted tubule.
C) papillary duct.
D) renal corpuscle.
E) ureter.

F) B) and E)
G) A) and B)

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Insoluble deposits that form within the urinary tract from calcium salts,magnesium salts,or uric acid are called kidney stones or renal ________.

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The ________ is the plasma concentration at which a specific compound will begin appearing in the urine.

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   Figure 26-1 The Structure of the Kidney Use Figure 26-1 to answer the following question: -Identify the structure labeled  8.  A) renal pelvis B) minor calyx C) ureter D) major calyx E) renal column Figure 26-1 The Structure of the Kidney Use Figure 26-1 to answer the following question: -Identify the structure labeled "8."


A) renal pelvis
B) minor calyx
C) ureter
D) major calyx
E) renal column

F) D) and E)
G) A) and E)

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The amount of filtrate produced by the kidneys each minute is called the ________.

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GFR or glo...

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Urine is eliminated through the


A) liver.
B) urinary bladder.
C) kidney.
D) ureter.
E) urethra.

F) B) and E)
G) A) and E)

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The process of ________ involves a carrier protein that can transport a molecule across the cell membrane down its concentration gradient.

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facilitate...

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Which of the following descriptions best matches the term nephron loop (loop of Henle) ?


A) relies on countercurrent multiplication
B) creates high interstitial NaCl concentration
C) enables production of hypertonic urine
D) site of obligatory water reabsorption.
E) All of the answers are correct.

F) D) and E)
G) C) and E)

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Which of the following substances are not normally found in the filtrate?


A) chloride ions
B) water
C) protein
D) urea
E) glucose

F) A) and E)
G) D) and E)

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The ureters and urinary bladder are lined by ________ epithelium.


A) stratified squamous
B) pseudostratified columnar
C) simple cuboidal
D) transitional
E) simple columnar

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

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Under normal conditions, glomerular filtration depends on three main pressures. From the list below, what are these three main pressures? 1) blood hydrostatic pressure 2) capsular hydrostatic pressure 3) capsular colloid osmotic pressure 4) blood colloid osmotic pressure 5) urinary bladder hydrostatic pressure


A) 1, 2, and 3 are correct.
B) 2, 3, and 4 are correct.
C) 3, 4, and 5 are correct.
D) 1, 2, and 4 are correct.
E) 2, 4, and 5 are correct.

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

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Substances secreted by the distal convoluted tubule include


A) hydrogen ions.
B) penicillin.
C) creatinine.
D) potassium ions.
E) All of the answers are correct.

F) B) and E)
G) B) and D)

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As the filtrate passes through the renal tubules,approximately what percentage is reabsorbed and returned to the circulation?


A) 1
B) 38
C) 63
D) 74
E) 99

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

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   Figure 26-2 The Nephron Use Figure 26-2 to answer the following question: -Which area is sensitive to aldosterone? A) 2 B) 1 C) 4 D) 3 E) 5 Figure 26-2 The Nephron Use Figure 26-2 to answer the following question: -Which area is sensitive to aldosterone?


A) 2
B) 1
C) 4
D) 3
E) 5

F) A) and D)
G) All of the above

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The renal veins drain into the


A) abdominal aorta.
B) renal arteries.
C) inferior vena cava.
D) segmental arteries.
E) peritubular capillaries.

F) A) and B)
G) A) and C)

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Changes that occur in the urinary system with aging include all of the following,except


A) a decline in the number of functional nephrons.
B) a reduction in the GFR (glomerular filtration rate) .
C) increased sensitivity to ADH.
D) problems with the micturition reflex.
E) loss of sphincter muscle tone.

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

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List each organ of the urinary system and concisely describe its function.

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Consisting of the kidneys,ureters,urinar...

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A patient excretes a large volume of very dilute urine on a continuing basis.This is may be due to


A) excessive ADH secretion.
B) absence of ADH.
C) hematuric oliguria.
D) overproduction of aldosterone.
E) dilation of the afferent arterioles.

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

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