BIOLOGY 221
Practice Quizzes - Urinary System
J.E. Lathrop-Davis, Assistant Professor

CCBC Catonsville

  1. The main function of the urinary system is _________________________________.

  2. The kidney helps regulate systemic blood pressure by secreting ________________.

  3. The kidney helps regulate red blood cell formation by secreting ________________.

  4. Urine is carried to the urinary bladder by the _________________; the __________ carries it from the bladder to the outside.

  5. The main function of the bladder is to __________________________________.

  6. The outer region of the kidney is called the ___________________. The inner region of the kidney is the ____________________.

  7. The _______________ brings oxygenated blood to the kidney; the ____________ provides venous drainage.

  8. The _____________ is the functional unit of the kidney.

  9. The functional unit is composed of 4 parts; name them, in the order in which they form or process the filtrate:

    1. ____________________. 3. ____________________.

    2. ____________________. 4. ____________________.

  10. Name and describe the three main processes of urine formation.

    a. ________________________________________.

    b. ________________________________________.

    c. ________________________________________.

  11. Bowman's capsule surrounds a specialized capillary bed called the ________________. Together these structures may be referred to as the __________________.

  12. The ________________________ consists of parts of the afferent and efferent arterioles as well as part of the distal convoluted tubule.

  13. The part from the arterioles is called the ________________; the part from the DCT is called the ___________________.

  14. What keeps the pressure higher in this capillary bed than in normal capillaries?


  15. ___________________________ is the main force responsible for adding fluid to the filtrate at the renal corpuscle.

  16. What are three factors that affect the glomerular filtration rate?

    ____________________________

    ____________________________

    ____________________________

  17. Increases in systemic blood pressure would be expected to result in increased filtration. What two intrinsic (autoregulatory) mechanisms does the kidney use to adjust flow to maintain a steady filtration rate?

    ___________________________ and ______________________________

  18. Most tubular reabsorption takes place in the ___________________________.

  19. What are two groups of substances that are normally reabsorbed?

    ___________________________ and ___________________________

  20. ________________transport uses the energy of the concentration gradient to move substances by diffusion, facilitated diffusion or osmosis.

  21. ________________ transport requires ATP and moves substances against their concentration gradients.

  22. ______________________ include urea, creatinine and uric acid, which are not normally reabsorbed.

  23. _____________________ is a hormone that targets cells of the CDs to increase Na+ reabsorption.

  24. What controls the secretion of the hormone in #23?



  25. _____________________ is a hormone that affects the CDs and increases their permeability to water.

  26. _____________________ is a hormone that inhibits the reabsorption of sodium, thereby inhibiting water reabsorption.

  27. _____________________ are chemicals that inhibit Na+reabsorption

  28. Reabsorption of water will - increase / decrease (circle one) - blood pressure.

  29. Diuretics will - increase / decrease (circle one) - blood pressure.

  30. __________________________ is the movement of solutes from the blood into the filtrate in the nephron.

  31. The __________________________ is the part of the nephron that acts as a counter-current multiplier to conserve water while allowing wastes to be removed. The blood vessels associated with this structure are called the ____________________.

  32. What type of diabetes results from:

    1. increased plasma glucose due to increased cortisol? ___________________

    2. increased plasma glucose due to decreased insulin? ___________________

    3. decreased ADH secretion? ____________________


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Updated: 19 August, 2004
Created and maintained by J. Ellen Lathrop-Davis, All Rights Reserved