The Endocrine System

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  • Created by: Davwi
  • Created on: 21-02-19 05:27

Hormones

  • Hormones are chemical molecules released directly into the blood. They are carried in the blood to other parts of the body, but only affect particular cells in particular organs (called target organs). Hormones control things in organs and cells that need constant adjustment.
  • Hormones are produced and secreted by various glands, called endocrine glands.
  • Hormones tend to have relatively long-lasting effects.
  • The pituitary gland produces many hormones that regulate body conditions. It is sometimes called the 'master gland' because some if its hormones stimulate other glands to produce hormones to bring about change.
  • The thyroid produces thyroxine, which is involved in regulating things like metabolistic rate, heart rate and temperature.
  • The adrenal gland produces adrenaline, which starts the 'fight or flight…

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