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6 Written questions

6 Multiple choice questions

  1. ADH increases water reabsorption's thereby decreasing urine volume.
    The collecting duct concentrates urine, water is reabsorbed in the medulla, 4x deep in the medulla
  2. protein 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
  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. the secretion is the movement of molecules form the blood into the tubules. this moves urea, uric acid, bile salts, ammonia, catecholamines, many drugs using a concentration gradient from peritubular capillaries to the renal tubule.
  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. 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

5 True/False questions

  1. 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.


  2. Describe who the nephron regulates water excretionthe generation of a salinity gradient allows the collecting duct to concentrate urine, also helped by electrolyte reabsorption


  3. Explain how the nervous system and urethral sphincters control the voiding 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. 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


  5. Define excretion and identify the systems that excrete wastesthis is the separation of wastes from body fluids and eliminating them; by four systems:
    respiratory, itegumentary, digestive, urinary.