Hormones are chemicals secreted by glands in the body. Different hormones affect different target organs or target cells. The bloodstream transports hormones from the glands to the target organs.
Hormones regulate the functions of many cells and organs.
Move the mouse over the different glands in the diagram below, to see what they do.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.