Homeostasis

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Homeostasis

• Is the bodys mechanism to ensure that its
  internal environment in a kept in constant Steady
  state
• everything stays the same
• Equilibrium.
• It runs on feedback mechanisms.

Basic Video
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How it works.
Rise above normal value
Corrective Mechanism
negative feedback
NEGATIVE FEEDBACK MECHANISM
normal value
normal value
negative feedback
Fall below normal value
Corrective Mechanism
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Example Body Temperature
Rise in body temperature
Sweating to cool body
negative feedback
NEGATIVE FEEDBACK MECHANISM
normal Temp
normal value
negative feedback
Decrease in Temperature
Shivering to increase energy (heat)
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Parts of Body involved

• Kidneys
• regulate water mineral salts concentration
• Skin
• regulate body temperature
• Liver Pancreas
• regulate blood glucose level - hunger.

skin
kidney
liver

pancreas
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• An inability to maintain homeostasis may lead to
  death or a disease.
• Diseases which result from a homeostatic
  imbalance include diabetes, dehydration,
  hypoglycemia, hyperglycemia, gout and any disease
  caused by the presence of a toxin in the
  bloodstream.
• Medical intervention can help restore homeostasis
  and possibly prevent permanent damage to the
  organs.

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So your body temperature went up and you sweated
A LOT.
After Sweating
Concentrated Blood
Larger proportion of water is reabsorbed
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So you drank water.
After Drinking
Diluted Blood
Smaller proportion of water is reabsorbed