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Urinary System, Putu Dyan Stephanie I1401201063 - Coggle Diagram

- - - - erythropoietin for hematopoiesis
      - renin for blood pressure and volume control
  - - - Excretion = Filtered - Reabsorbed + Secreted
      - Filtration = The movement of material from blood into the tubular lumen
      - Reabsorption = the movement of filtered material from the tubular lumen back to the blood
      - Secretion = the movement of material from the blood directly into the renal tubule
    - - Net reabsorption: filtration rate > excretion rate
      - No net reabsorption: filtration rate = excretion rate
      - Net secretion: filtration rate < excretion rate
- - - - The pressure is determined by renal blood flow and pressure
      - the coefficient is determined by the surface area of the glomerular capillaries available for filtration and the permeability of the capillary-Bowman capsule interface.
    - - Myogenic mechanism
      - Tubulo-glomerular feedback
      - Regylation by Reflex Loops
  - - - the fraction of plasma that becomes glomerular filtrate
      - the normal filtration fraction is about 0.2
      - Filtration Fraction = GFR/ RPF
  - - - causes renal vasoconstriction to shunt blood to other tissues (heart and brain) if the MAP is less than 80 mmHg
      - If prolonged, then the ischemia (lack of blood flow) to the kidney will trigger apoptosis (cell death of the renal tubules) and cause kidney failure