HOMEOSTATIS

Description

GCSE REVISON
Aurelie  Barber Walkley
Mind Map by Aurelie Barber Walkley, updated more than 1 year ago
Aurelie  Barber Walkley
Created by Aurelie Barber Walkley over 4 years ago
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Resource summary

HOMEOSTATIS
  1. HOMEOSTATIS IS THE REGULATION OF CONDITIONS IN THE BODY SUCH AS TEMPERATURE, WATER CONTENT AND CARBON DIOXIDE LEVELS.
    1. DIABETES IS A CONDITION WHERE THE BODY CANNOT REGULATE ITS BLOOD GLUCOSE LEVELS
    2. THE CONDITIONS INSIDE OUR BODY MUST BE VERY CAREFULLY CONTROLLED IF THE BODY IS TO FUNCTION EFFECTIVELY. HOMEOSTATIS IS THE MAINTENANCE OF A CONSTANT OF A CONSTANT INTERNAL ENVIRONMENT. THE NERVOUS SYSTEM AND HORMONES ARE RESPONSIBLE FOR THIS.
      1. BODY TEMPERATURE
        1. THIS IS CONTROLLED TO MAINTAIN THE TEMPERATURE AT WHICH THE BODY'S ENZYMES WORK BEST, WHICH IS USUALLY 37°C.
        2. BLOOD SUGAR LEVEL
          1. THIS IS CONTROLLED TO PROTECT CELLS WITH A CONSTANT SUPPLY OF GLUCOSE FOR RESPIRATION. IT IS CONTROLLED BY THE RELEASE AND STORAGE OF GLUCOSE, WHICH IN TURN IS CONTROLLED BY INSULIN.
          2. WATER CONTENT
            1. THIS IS CONTROLLED TO PROTECT CELLS BY STOPPING TOO MUCH WATER FROM ENTERING OR LEAVING THEM. WATER CONTENT IS CONTROLLED BY WATER LOSS FROM: THE LUNGS -WHEN WE EXHALE, THE SKIN -BY SWEATING + THE BODY -IN URINE PRODUCED BY THE KIDNEYS
            2. NEGATIVE FEEDBACK
              1. HOMEOSTATIC CONTROL IS ACHIEVED USING NEGATIVE FEEDBACK MECHANISMS; IF THE LEVEL OF SOMETHING RISES, CONTROL SYSTEMS REDUCE IT AGAIN. IF THE LEVEL OF SOMETHING FALLS, THE CONTROL SYSTEMS RAISE IT AGAIN.
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