The Medieval Goitre
Sunday, January 24, 2021
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What is a hormone?

A hormone is a chemical messenger released by an endocrine gland into the bloodstream where it is carried to a distant site to exert its effect. There are a wide variety of hormones; they are different in their chemical nature, their site of production and release, and the effects they induce.

Endocrine System

  • What is the endocrine system
  • What is a hormone
  • What types of hormones are there
  • Functions of the hormones
  • How hormones work
  • Control of hormone release
  • What is negative feedback
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