endocrine system

• what are hormones?


  hormones are chemical molecules released directly into the blood
• what is the endocrine system?

  The endocrine system is composed of glands which secrete chemicals called hormones directly into the bloodstream. The blood carries the hormone to a target organ where it produces an effect. Compared to the nervous system the effects are slower but act for longer
• what is the endcorine system made up of?

  endocrine glands
• where are endocrine glands found?

  • pituitary gland
  • thyroid
  • adrenal gland
  • pancreas
  • ovaries
  • testes
• what is the pituarity gland and what does it do?

  The pituitary gland in the brain is a ‘master gland’ which secretes several hormones into the blood in response to body conditions. These hormones in turn act on other glands to stimulate other hormones to be released to bring about effects.
• where are hormones produced?

  endocrine glands
• what do hormones control?

  things in organs and cells that need constant adjustment
• thyroid


  produces thyroxine which is involved in regulating things like rate of metabolism, heart rate and temperature
• adrenal gland


  produces adrenaline which is used too prepare body for a fight or flight response
• endocrine system 


  ..

  
• hormones

  • slower action
  • act for long time
  • act in general way
• nerves

  • very fast action
  • act for very short time
  • act on very precise area