B4 - Homeostatis

A set of revision cards on the B4 topic. Hope they help you :)

Homeostatis = maintaining a constant internal environment.

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Water homeostatis

  • Your kidneys have two main jobs, homeostatis and excretion.
  • The kidneys extrete the toxic urea from your blood stream and also gets rid of any excess water.
  • Liver cells make urea when urea when breaking down your body's amino acids so as it flows through your kidney it is removed from the blood.
  • Your kidney works as a sieve, taking out all small molecules from your blood (water, sugar, salt ions and urea)
  • Useful molecules are reabsorbed into the blood (glucose, some salt and sme water)
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Water Balance

  • On hot days you make less, concentrated 
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Comments

alex colton

like the first page but i feel the second needs something adding to it overall i am marking what is there and the content is good so a 5/5

alex:)

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