The endocrine system is a system of ductless endocrine glands that secrete chemicals called hormones that circulate within the body via the bloodstream to affect distant organs. It does not include exocrine glands such as salivary glands, sweat glands and glands within the gastrointestinal tract.

Table of endocrine glands and the hormones secreted

In both sexes:

(starting from the head and going downwards)

In males only

In females only


See also:

  • target organs
  • receptors
  • releasing hormoness