Endocrine system

• Endocrine system- is made up of glands, which secrete hormones directly into the bloodstream, which are carried to specific organs.
• Pituitary gland

  • Known as 'master gland'
  • Tells body what to do and stimulates other glands to release their hormones
  • It is attached to the brain
• Thyroid gland

  • Found in the neck
  • Produces thyroxine, which regulates rate of metabolism and is important in growth and development
  • 'TSH' will be released from pituitary gland, when thyroxine level is low (negative feedback)
• Adrenal gland

  • Found on top of the kidneys
  • Produces adrenaline, which can increase heart rate
  • It is released in response to fear or stress, and it readies the body for a fight or flight response
• Pancreas

  • Found in front of the kidneys
  • Produces insulin and glucagon, which regulate the blood glucose concentration
• Testes

  • Produces testosterone, which controls puberty
  • Produces sperm
• Ovaries

  • Produces oestrogen, which is involved in puberty and menstrual cycle
  • Hold egg cells
• Difference between;

  ENDOCRINE

  • Spreads more slowly but the effects last longer.
  • Acts generally, as it spreads through the entire body.

  NERVOUS

  • Very fast but effects don't last long.
  • Sent to specific area.