Sunday, 14 July 2013

Hormones

Hormones are chemicals messages.
Messages are slower than nerve messages and last longer.
Hormones are produced in endocrine glands and then passed directly into the blood.
Each hormone produced has it's own specific function.
Hormones can act on the whole body,on body systems or individuals organs.

Endocrine glands 
Endocrine glands are located throughout the body
Responsible for the production of hormones 
Endocrine glands include the typhoid, pancreas 

Pituitary gland
 The pituitary gland is the master gland that  controls the other endocrine glands
The pituitary gland produces hormones that act on other organs 
The pituitary gland is also responsible for the production of hormones that influences the reproductive organs and growth before puberty.


How the body response 
Stimulus received   
           $ 
Endocrine gland produces a hormone 
            $
Hormone is carried around the body in the blood 
                  $
Target cells and organs respond to the hormone 
                          $
Homeostasis is restored and the hormone is destroyed by the liver.

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