 A hormone (from the Greek horman - "to set in motion") is a chemical messenger that is sent from one cell (or group of cells) to another. The endocrine system is the label for all the organs in your body that use hormones to communicate, control and coordinate how your body works. Hormones control such things as body energy levels, reproduction, growth and development, and responses to stress and injury. The endocrine system accomplishes all this through a network of glands and organs that produce, store, and secrete certain hormones. Most hormones are secreted directly into the bloodstream,where they make their way to where they are needed. Sometimes the release of one hormone can stimulate the release of other hormones, in a complicated interaction of chemicals necessary to keep your body working.
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