Phys #11.txt

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Author:
kepling
ID:
74335
Filename:
Phys #11.txt
Updated:
2011-04-04 18:48:27
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Phys
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Phys #11
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  1. What are three main kidney balances?
    • Sodium
    • Potassium
    • Water
  2. What is the steady state amount of kidney urine balance?
    1100 ml
  3. What state is a person in if their urine flow is >1000 ml?
    Negative water balance
  4. What diseases can cause a Positive Water Balance?
    • Congestive Heart Failure
    • ADH (Salt retention)
    • excess steroids
  5. What is the function of the renal corpuscle?
    Filtration (but not proteins)
  6. What is the job of the proximal tubule?
    reabsorption (60-80%)
  7. Does the urine concentrate in the proximal tubule?
    No, osmotic gradient maintained
  8. In the distal tubule, what controls urine permeability?
    Vasopressin
  9. What nephrons concentrate urine: Cortical or Juxtaglomerular?
    JGA
  10. What cells in the nephron system release Renin?
    Granular (juxtaglomerular) cells
  11. What are the two capillary beds in the nephron system?
    • Glomerular
    • Peritubular:
    • - cortical
    • - vasa recta
  12. Are renal nerves sympathetic or Parasympathetic?
    Sympathetic
  13. What is the main SNS neuron: alpha or beta?
    Alpha
  14. Where is the alpha SNS receptor mainly found: efferent or afferent arterioles?
    Afferent
  15. What are the four components of renal function?
    • Glomerular filtration
    • Tubular secretion
    • Tubular reabsorption
    • Excretion
  16. In the JGA, what contracts the mesangial cells?
    ANG II
  17. What opposes constant SNS stimulation of the nephrons?
    PGE2 and PGI2

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