B4 - Homeostatis

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

Homeostatis = maintaining a constant internal environment.

HideShow resource information

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)
1 of 2

Water Balance

  • On hot days you make less, concentrated 
2 of 2


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


Similar Biology resources:

See all Biology resources »See all Homeostasis resources »