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BookmarkA hormone is a chemical messenger from one cell (or group of cells) to another.
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All multicellular organisms produce hormones including plants.
The best-known animal (and human) hormones are those produced by endocrine glands of vertebrate animals, but hormones are produced by nearly every organ system and tissue type in a human or animal body..
For more information about the topic Hormone, read the full article at Wikipedia.org, or see the following related articles:
Endocrine system — The endocrine system is a control system of ductless glands that secrete chemical messengers called hormones that circulate within the body via the ... > read more
Pituitary gland — The pituitary gland, or hypophysis, is an endocrine gland about the size of a pea that sits in the small, bony cavity at the base of the brain. The ... > read more
Anterior pituitary — The anterior pituitary (also called the adenohypophysis) comprises the anterior lobe of the pituitary gland and is part of the endocrine system. ... > read more
Human physiology — Human physiology is the science of the mechanical, physical, and biochemical functions of normal humans or human tissues or organs. The principal ... > read moreNote: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Hormone at Wikipedia.org. See the Wikipedia copyright page for more details.
