Thyroxine

• Thyroxine regulates metabolic rates and is important in growth and development
• Thyroxine is produced by the thyroid gland located above the neck
• If Thyroxine levels are too low..

  • The Pituitary gland released TSH
  • Then stimulates the Thyroid gland to release more thyroxine
  • Thyroxine levels go back up
• If Thyroxine levels are too high...

  • The Thyroxine gland inhibits the Pituitary gland from producing TSH
  • Less TSH = Less Thyroxine
  • Thyroxine levels go back to normal