Urinary System (MCAT Practice Questions)

18 Questions | Total Attempts: 535

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MCAT Quizzes & Trivia

Questions and Answers
  • 1. 
    The renal medulla is composed of tissue called ______.
    • A. 

      Renal pyramids

    • B. 

      Nephrons

    • C. 

      Renal sinus

    • D. 

      Renal pelvis

  • 2. 
    Juxtaglomerular cells combine with _______ cells to form the juxtagomerular apparatus in the kidney.
    • A. 

      Macula densa

    • B. 

      Renal pelvis

    • C. 

      Nephron

    • D. 

      Renal sinus

  • 3. 
    • A. 

      Arciform artery

    • B. 

      Afferent arteriole

    • C. 

      Interlobar vein

    • D. 

      Arciform vein

  • 4. 
    Which is found in the highest concentration in the urine?
    • A. 

      Uric acid

    • B. 

      Urea

    • C. 

      Glucose

    • D. 

      Creatinine

  • 5. 
    The primary function of the ascending loop of Henle in the kidney is?
    • A. 

      The active re-absorption of sodium

    • B. 

      The active re-absorption of chloride ions

    • C. 

      The passive re-absorption of potassium

    • D. 

      The passive re-absorption of urea

  • 6. 
    The middle layer of the urinary bladder is identified as ___________.
    • A. 

      Mucous coat

    • B. 

      Submucous coat

    • C. 

      Muscular Coat

    • D. 

      Sphincter Coat

  • 7. 
    He micturition reflex center is located in the _____.
    • A. 

      Pons

    • B. 

      Midbrain

    • C. 

      Lumbar plexus

    • D. 

      Sacral plexus

  • 8. 
    Which of the following match with the definition: a poor output of urine?
    • A. 

      Oliguria

    • B. 

      Pyruia

    • C. 

      Enuresis

    • D. 

      Diuresis

  • 9. 
    Capillary loops located in the medulla are also known as _________.
    • A. 

      Vasa recta

    • B. 

      Urea collectors

    • C. 

      Trigone

    • D. 

      Macula densa

  • 10. 
    The primary function of the descending loop of Henle in the kidney is?
    • A. 

      Reabsorption of sodium ions

    • B. 

      Reabsoption of water by osmosis

    • C. 

      Secretion of hydrogen ions

    • D. 

      Secretion of potassium ions

  • 11. 
    Which of the following is not considered a part of the male urethra?
    • A. 

      Prostatic

    • B. 

      Membranous

    • C. 

      Vasapore

    • D. 

      Penile

  • 12. 
    When glucose if found in urine it is called _____.
    • A. 

      Glucosuria

    • B. 

      Uremia

    • C. 

      Ureteritis

    • D. 

      Glucose intolerance

  • 13. 
    Which of the following is not considered a component of kidney stones?
    • A. 

      Calcium phosphate

    • B. 

      Uric Acid

    • C. 

      Calcium oxalate

    • D. 

      HCO3

  • 14. 
    The one of the functions occurring at the distal convoluted tubule in the kidney is?
    • A. 

      Passive secretion of hydrogen ions

    • B. 

      Passive secretion of potassium ions

    • C. 

      Limited re-absorption of water

    • D. 

      No re-absorption of sodium

  • 15. 
    ADH has which of the following effects on the distal convoluted tubule?
    • A. 

      Decrease water re-absorption

    • B. 

      Increase water re-absorption

    • C. 

      Decrease the concentration of urine

    • D. 

      Increase the urine volume

  • 16. 
    Which of the following is not associated with the role of the kidneys?
    • A. 

      Release of erythropoietin (hormone)

    • B. 

      Release of renin (enzyme)

    • C. 

      Release of Vitamin E

    • D. 

      Activate Vitamin D

  • 17. 
    Each kidney contains approximately ______ nephrons.
    • A. 

      10 million

    • B. 

      1 million

    • C. 

      100,000

    • D. 

      10,000

  • 18. 
    The release of Angiotension II causes which of the following to occur
    • A. 

      Increased filtration rate

    • B. 

      Decreased glomerular hydrostatic pressure

    • C. 

      Increase synthesis of Vitamin E

    • D. 

      Increased release of erythropoietin