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6 Written questions

6 Multiple choice questions

  1. Renal corpuscle:
    -the glomerulus produces filtrate
    -proximal convoluted tubule
    -Descending limb of the nephron loop active transport of salts
    -ascending limb of nephron loop
    -Distal convoluted tubule
    -collecting duct receives filtrate from many DCTs
    -papillary duct merges collecting duct together
  2. Glomerular filtration rate is controlled by adjustors glomerular blood pressure:
    autoregulation - mycogenic mechanism (keeps flow constant)
    macula densa on DCT monitors flow (increase of arterioles bp causes vasoconstriction of afferent arteriole)
    signals juxtamedullary cells to constrict (decrease of arteriole bp causes vasoconstriction of arteriole)
    -sympathetic control
    strenuous exercise or acute condition cause afferent arterioles to constrict, lower GFR and urine production, redirecting blood flow to visceral areas.
    -hormonal mechanisms
    rennin release entering chain of angiotensinogenII to vasoconstrictor vessels elevating blood pressure.
    promotes water and NA reabsorption.
    Stimulates sensation of thirst.
  3. the counter current multiplier. This recaptures NaCl and returns it to renal medulla
  4. 200ml of urine will still activate stretch receptors. this inhibits sympathetic neurones - relaxing internal sphincter; while stimulating parasympathetic neurones - stimulating detrusor muscles
    The external urethral sphincter is under voluntary control
  5. 1-glomerular filtration - driven by filtration pressure
    2-Tubular reabsorption and secretion - movetment of solutes and water in and out for the tubules
    3-water conservation regulation of the volume concentration of urine
  6. this is the separation of wastes from body fluids and eliminating them; by four systems:
    respiratory, itegumentary, digestive, urinary.

5 True/False questions

  1. Name the major nitrogenous wastes and identify their sourcesprotein catabolism amino acids and NH2 which removed by the liver as uea, there is also uric acid and creatinin.
    Uric acid derives form nucleic acid catabolism.
    Creatininie derives from creatine phosphate catabolism

          

  2. Describe the functional anatomy of the ureters, urinary bladder, and male and female urethra.Ureters transport urine to urinary bladder. the Bladder stores the urine until full; the urethra is the the exit by which urine leaves the body.

          

  3. explain how the collecting duct and antidiuretic hormone regulate the volume and concentration of urine200ml of urine will still activate stretch receptors. this inhibits sympathetic neurones - relaxing internal sphincter; while stimulating parasympathetic neurones - stimulating detrusor muscles
    The external urethral sphincter is under voluntary control

          

  4. Name, locate and describe the organs of the urinary systemthis is the separation of wastes from body fluids and eliminating them; by four systems:
    respiratory, itegumentary, digestive, urinary.

          

  5. Describe how the renal tubeless reabsorb useful solutes from the golmerular filtrate and return them to the bloodNaCl electrical gradient
    glucose - co-transported by sodium glucose transport proteins, diffusion
    nitrogenous wastes - diffusion
    other electrolytes - solvent drag
    water - aqua porins