The Vertebrate Kidney

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Author:
DesLee26
ID:
216878
Filename:
The Vertebrate Kidney
Updated:
2013-04-30 20:53:44
Tags:
BIO 220
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FINAL
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  1. The Vertebrate kidney
    Nephrons
    • vertebrate excretory tubules
    • -  Collected into kidneys
    • -  20% of blood pumped by each heartbeat enters kidneys
  2. Anatomy of Excretory System/ Structure of Nephron
    Approx. 1 million __ per kidney.
    -  Filtrate = __ and other small molecules that pass into  __

    -  kidneys process __
     per day; all but__ reabsorbed.
    -  Filtrate in __ now called __.
    • nephrons (renal tubules)
    • water + salts, urea
    •  renal tubule (nephron)
    • 180L filtrate
    •  1.5L
    • collecting ducts
    • urine
  3. __ have reduced __ and are confined to   __(80% of nephrons).
    __
     have long loops that extend into the __and are found only in mammals and birds (__).
    -  Materials exchanged between __ and __ through   __/
    • Cortical nephrons
    • loops of Henle
    • cortex
    • Juxtamedullary nephrons
    • medulla  
    • 20% of nephrons
    • capillaries and nephrons
    • interstitial fluid.
  4. Explain filtrate
    When it leaks out of the capillaries, it is called filtrate; it has no blood or proteins; it has collected into the Bowman’s Capsule and this capsule drains into a tube taking it away
  5. Examples of nutrients:
    • glucose
    • amino acids
  6. What is blood osmolarity
    300 milliosmolar
  7. What is osmolarity
    moles of solute per liter of solution

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