NAME: ________________________

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6 Written Questions

6 Multiple Choice Questions

  1. the generation of a salinity gradient allows the collecting duct to concentrate urine, also helped by electrolyte reabsorption
  2. yellow due to urochrome, smells as bacteria degrade urea to ammonia, density range 1.001-1.028 mmhg, ranges osmolarity 50mOsm/L to 1,200mOsm/L. pH range 4.5-8.5, usually 6.0 with the 95% water, 5% solutes urea, NaCl, KCl, creatinine, uric acid.
  3. Heart>aorta>renal A>Segmental A>Interlobar A>arcuate A>interlobular A>Afferent arteriole>Glomerulus>efferent arteriole:
    1. Peritubular capillaries>interlobular vein
    2. Vasa recta>arcuate vein
    >arcuate V>interlobular V>renal V> Vena cava
  4. NaCl electrical gradient
    glucose - co-transported by sodium glucose transport proteins, diffusion
    nitrogenous wastes - diffusion
    other electrolytes - solvent drag
    water - aqua porins
  5. primary function: production and excretion of urine

    Other functions: blood plasma filtration, regulation of blood volume and pressure, regulation of body fluid osmolarity, secretion of renin and erythropoietin, regulate the bodes acid base balance, calcium homeostasis, glucogenisis.
  6. 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 True/False Questions

  1. Describe who tubules secret solutes form the blood into the tubular fluidthe generation of a salinity gradient allows the collecting duct to concentrate urine, also helped by electrolyte reabsorption

          

  2. 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

          

  3. Name the major nitrogenous wastes and identify their sourcesHeart>aorta>renal A>Segmental A>Interlobar A>arcuate A>interlobular A>Afferent arteriole>Glomerulus>efferent arteriole:
    1. Peritubular capillaries>interlobular vein
    2. Vasa recta>arcuate vein
    >arcuate V>interlobular V>renal V> Vena cava

          

  4. Trace the flow of fluid throughout the renal tubeless, and each functionHeart>aorta>renal A>Segmental A>Interlobar A>arcuate A>interlobular A>Afferent arteriole>Glomerulus>efferent arteriole:
    1. Peritubular capillaries>interlobular vein
    2. Vasa recta>arcuate vein
    >arcuate V>interlobular V>renal V> Vena cava

          

  5. Name, locate and describe the organs of the urinary systemoverview, six organs
    kidneys, ureters, urinary bladder, and urethra

          

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