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Urine formation osmo regulation

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Urine formation osmo regulation

  1. 1. Kidneys in Urine Formation<br />Pg 226-229<br />Urine Formation<br />
  2. 2. Processes in Urine Formation<br />*Ultrafiltration<br />*Selective reabsorption<br />Secretion<br />Excretion<br />2<br />
  3. 3. Ultrafiltration<br /><ul><li>Process whereby small molecules such as water, glucose, amino acids, sodium chloride and urea in blood are forced through the basement membrane of the Bowman's capsule and into the nephron at high pressure. </li></ul>3<br />
  4. 4. Selective reabsorption<br />4<br />http://www.hcc.uce.ac.uk/physiology/selective%20reabsorption2.gif<br />
  5. 5. 5<br />http://www.biologymad.com/resources/kidney.swf<br />
  6. 6. Kidney as Osmoregulators<br />Pg 230 - 231<br />Osmoregulation<br />
  7. 7. Definition of osmoregulation<br />Is the control of water and solute levels (e.g. salt, sugar) in the blood to maintain a constant water potential in the body<br />
  8. 8. What controls amount of water in the blood?<br />Controlled by vasopressin or antidiuretic hormone (ADH).<br />Produced by a region called hypothalamus of the brain.<br />Released by the pituitary gland of the brain.<br />Pituitary<br />Hypothalamus region<br />mmmmmmmmmm<br />mmmm<br />
  9. 9. How to control amount of water in the blood?<br />
  10. 10. 10<br />
  11. 11. How to control amount of glucose in the blood?<br />
  12. 12. How to control amount of salt in the blood?<br />

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