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phys #12.txt

  1. How much CO does the kidney receive?
    1/4 CO
  2. How much kidney filtrate formed/day?
    180 ml
  3. Does the SNS constrict or relax the renal system?
    Constrict
  4. What is the function of AngII?
    • Constrict efferent/afferent arterioles
    • ****Efferent more affected
  5. What drives GFR?
    RBF
  6. What is the range of MW for molecules that can and can't pass the glomerulus?
    MW 7000 - 70,000
  7. Can a negative ion pass the glomerulus?
    No, due to negative charged diaphragm
  8. Does AngII increase/decrease Kf? How?
    • Decrease
    • Contracts Mesangial cells
  9. What is the function of ANP, glucocorticoids, NO and prostaglandins?
    Dilate Efferent/Afferent arteriole
  10. Describe tubuloglomerular feedback?
    • GFR increases and causes more NaCl to be present at glomerulus
    • Macula Densa cells recognize increase in NaCl and signal
    • Signalling causes constriction of afferent arteriole
    • constriction of afferent arteriole causes GFR and RBF to decrease
  11. What chemical constricts the afferent arterial in the Tubuloglomerular system?
    Adenosine
Author
kepling
ID
74354
Card Set
phys #12.txt
Description
phys #12
Updated

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