Hormones: Chemical substances having a specific regulatory effect on the activity of a certain organ or organs. The term was originally applied to substances secreted by various ENDOCRINE GLANDS and transported in the bloodstream to the target organs. It is sometimes extended to include those substances that are not produced by the endocrine glands but that have similar effects.
Source: MeSH 2007
Hormones (organ): Another name for Hormonal system.
Hormones (organ): The body's complex and varied systems of hormones to control various processes.
Hormones (organ): Hormones are the chemical signaling molecules produced by the endocrine glands and secreted directly into the bloodstream. They travel through the blood to distant tissues and organs, where they can bind to specific cell sites called receptors. By binding to receptors, hormones trigger various responses in the tissues containing the receptors.
More information on organs: Hormonal system:
The following list attempts to classify Hormones into categories where each line is subset of the next.
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