Biomed 100 Practice Quiz
Chapter 17, Spring 2007
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  1. Which one of the following is false?
    1. The removal of amino groups from amino acids results in the production of ammonia.
    2. The liver converts ammonia to urea.
    3. Both ammonia and urea are extremely toxic.
      4.
    4. Both ammonia and urea are excreted by the kidneys.

  2. What is the function of the afferent arterioles located in the kidneys?
    1. Carry blood into renal corpuscles for filtration.
      2.
    2. Reabsorb water from filtrate to prevent dehydration.
    3. Reabsorb electrolytes from filtrate to prevent imbalances.
    4. Carry urine out of renal pyramids for excretion.

  3. Each renal corpuscle includes a _?_ and a _?_.
    1. renal artery and a renal vein
    2. glomerulus and a glomerular capsule
      3.
    3. proximal convoluted tubule and a distal convoluted tubule
    4. pair of ureters and a urethra

  4. Which of the following renal structures is found in the medulla of the kidney?
    1. glomerulus
    2. collecting duct
      3.
    3. distal convoluted tubule
    4. proximal convoluted tubule

  5. A glomerulus contains...
    1. blood at relatively high pressure for a capillary
      2.
    2. blood at relatively low pressure for a capillary
    3. filtrate at relatively low pressure relative to the fluid in the renal tubule
    4. urine at relatively high pressure relative to the fluid in the renal tubule
    5. urine at relatively low pressure relative to the fluid in the renal tubule

  6. The greatest difference between plasma and the filtrate formed in the renal corpuscles is the relative absence of _?_ in the latter.
    1. glucose
    2. proteins
      3.
    3. electrolytes
    4. ammonia and urea

  7. Normally, the volume of glomerular filrate produced per day is _?_ the volume of urine produced per day.
    1. much greater than
      2.
    2. slightly greater than
    3. exactly equal to
    4. slightly less than
    5. much less than

  8. As fluid is passing through the kidneys, the substance reabsorbed to the least extent is...
    1. water
    2. sodium
    3. glucose
    4. urea
      5.

  9. The amount of urea in the plasma is generally proportional to...
    1. the amount of protein in the diet.
      2.
    2. the amount of sodium in the diet.
    3. the amount of glucose in the blood.
    4. the amount of sodium in the blood.