Human Body Chapter 25

55 Questions | Total Attempts: 362

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Human Body Quizzes & Trivia

Chapter 25


Questions and Answers
  • 1. 
    The mechanism that establishes the medullary osmotic gradient depends most on the permeability properties of the ________.
    • A. 

      Distal convoluted tubule

    • B. 

      Glomerular filtration membrane

    • C. 

      Collecting duct

    • D. 

      Loop of Henle

  • 2. 
    Urine passes through the ________.
    • A. 

      Renal hilum to the bladder to the ureter

    • B. 

      Pelvis of the kidney to ureter to bladder to urethra

    • C. 

      Hilum to urethra to bladder

    • D. 

      Glomerulus to ureter to renal tubule

  • 3. 
    Which of the following is not associated with the renal corpuscle?
    • A. 

      An efferent arteriole

    • B. 

      A vasa recta

    • C. 

      A fenestrated capillary

    • D. 

      A podocyte

  • 4. 
    An increase in the permeability of the cells of the collecting tubule to water is due to a(n) ________.
    • A. 

      Decrease in the production of ADH

    • B. 

      Decrease in the concentration of the blood plasma

    • C. 

      Increase in the production of ADH

    • D. 

      Increase in the production of aldosterone

  • 5. 
    The urinary bladder is composed of ________ epithelium.
    • A. 

      Stratified squamous

    • B. 

      Pseudostratified columnar

    • C. 

      Transitional

    • D. 

      Simple squamous

  • 6. 
    The kidneys are stimulated to produce renin ________.
    • A. 

      When the specific gravity of urine rises above 1.10

    • B. 

      By a decrease in the blood pressure

    • C. 

      When the pH of the urine decreases

    • D. 

      When the peritubular capillaries are dilated

  • 7. 
    Which of the choices below is not a function of the urinary system?
    • A. 

      Helps maintain homeostasis by controlling the composition, volume, and pressure of blood

    • B. 

      Maintains blood osmolarity

    • C. 

      Regulates blood glucose levels and produces hormones

    • D. 

      Eliminates solid, undigested wastes and excretes carbon dioxide, water, salts, and heat

  • 8. 
    Which gland sits atop each kidney?
    • A. 

      Pancreas

    • B. 

      Pituitary

    • C. 

      Adrenal

    • D. 

      Thymus

  • 9. 
    The ________ artery lies on the boundary between the cortex and medulla of the kidney.
    • A. 

      Interlobar

    • B. 

      Cortical radiate

    • C. 

      Lobar

    • D. 

      Arcuate

  • 10. 
    The glomerulus differs from other capillaries in the body in that it ________.
    • A. 

      Is impermeable to most substances

    • B. 

      Has a basement membrane

    • C. 

      Has a blood pressure much lower than other organ systems

    • D. 

      Is drained by an efferent arteriole

  • 11. 
    The descending limb of the loop of Henle ________.
    • A. 

      Is freely permeable to sodium and urea

    • B. 

      Is not permeable to water

    • C. 

      Pulls water by osmosis into the lumen of the tubule

    • D. 

      Contains fluid that becomes more concentrated as it moves down into the medulla

  • 12. 
    Select the correct statement about the ureters.
    • A. 

      The ureter is innervated by parasympathetic nerve endings only.

    • B. 

      Ureters contain sphincters at the entrance to the bladder to prevent the backflow of urine.

    • C. 

      The epithelium is stratified squamous like the skin, which allows a great deal of stretch.

    • D. 

      The ureters are capable of peristalsis like that of the gastrointestinal tract.

  • 13. 
    The fatty tissue surrounding the kidneys is important because it ________.
    • A. 

      Is necessary as a barrier between the adrenal glands and kidneys

    • B. 

      Stabilizes the position of the kidneys by holding them in their normal position

    • C. 

      Ensures adequate energy for the adrenal glands to operate efficiently

    • D. 

      Produces vitamin D

  • 14. 
    The renal corpuscle is made up of ________.
    • A. 

      The renal papilla

    • B. 

      The descending loop of Henle

    • C. 

      The renal pyramid

    • D. 

      Bowman's capsule and glomerulus

  • 15. 
    The functional and structural unit of the kidneys is the ________.
    • A. 

      Glomerular capsule

    • B. 

      Loop of Henle

    • C. 

      Basement membrane of the capillaries

    • D. 

      Nephron

  • 16. 
    The juxtaglomerular apparatus is responsible for ________.
    • A. 

      The secretion of drugs

    • B. 

      The secretion of acids and ammonia

    • C. 

      Regulating the rate of filtrate formation and controlling systemic blood pressure

    • D. 

      Reabsorption of organic molecules, vitamins, and water

  • 17. 
    The chief force pushing water and solutes out of the blood across the filtration membrane is ________.
    • A. 

      The thickness of the capillary endothelium

    • B. 

      Glomerular hydrostatic pressure (glomerular blood pressure)

    • C. 

      The size of the pores in the basement membrane of the capillaries

    • D. 

      The design and size of the podocytes

  • 18. 
    Which of the following statements describes the histology of the ureters?
    • A. 

      They are actually an extension of the visceral peritoneum.

    • B. 

      They are made up entirely of muscle tissue because they need to contract in order to transport urine efficiently.

    • C. 

      They are made up of several layers of endothelium.

    • D. 

      They are trilayered (mucosa, muscularis, and adventitia).

  • 19. 
    Which of the following statements is a false or incorrect statement?
    • A. 

      The male urethra serves both the urinary and reproductive systems at the same time.

    • B. 

      The male urethra is longer than the female urethra.

    • C. 

      The male urethra serves both the urinary and reproductive systems but at different times.

    • D. 

      The male urethra is a passageway for both urine and semen.

  • 20. 
    Which of the following acts as the trigger for the initiation of micturition (voiding)?
    • A. 

      The pressure of the fluid in the bladder

    • B. 

      The stretching of the bladder wall

    • C. 

      The sympathetic efferents

    • D. 

      Motor neurons

  • 21. 
    The filtration membrane includes all except ________.
    • A. 

      Basement membrane

    • B. 

      Renal fascia

    • C. 

      Glomerular endothelium

    • D. 

      Podocytes

  • 22. 
    The mechanism of water reabsorption by the renal tubules is ________.
    • A. 

      Solvent drag

    • B. 

      Osmosis

    • C. 

      Cotransport with sodium ions

    • D. 

      Active transport

  • 23. 
    Most electrolyte reabsorption by the renal tubules is ________.
    • A. 

      Hormonally controlled in distal tubule segments

    • B. 

      In the distal convoluted tubule

    • C. 

      Completed by the time the loop of Henle is reached

    • D. 

      Not Tm limited

  • 24. 
    The macula densa cells respond to ________.
    • A. 

      Changes in solute content of the filtrate

    • B. 

      Antidiuretic hormone

    • C. 

      Changes in pressure in the tubule

    • D. 

      Aldosterone

  • 25. 
    Which of the following is not reabsorbed by the proximal convoluted tubule?
    • A. 

      K+

    • B. 

      Glucose

    • C. 

      Na+

    • D. 

      Creatinine