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3 Cards in this Set
- Front
- Back
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Collecting duct |
The most important role is to conserve body fluids When body must conserve water , posterior pituitary gland secretes ADH ADH increases the permeability of collecting tubules and distal convulated tubules to more water so more is reabsorbed This decrease the total volume of urineAlcohol inhibits the release of ADH ,so less water is re-absorbed producing copious amounts of dilute urine Alcohol inhibits the release of ADH ,so less water is re-absorbed producing copious amounts of dilute urine |
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Vasa recta |
Portion of the peritubular capillary system which enters medulla where solute concentration in interstitium is high It acts with loop of Henle to concentrate urine by complex mechanism of counter current exchange using urea. If vasa recta doesn't exist the high concentration of solutes in the medullary would be washed out |
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Juxtaglomerular apparatus |
Regulation of blood pressure Granule Macula densa |
