A chemical substance produced in the body by an organ, which has a specific regulatory effect on the activity of other organs or cells Hippocampus: Area of gray matter extending the entire length of the floor of the temporal horn of the lateral ventricle of the brain
A chemical produced by glands in the body that controls cellular functions and transmits messages from the brain to the cells
An active chemical substance formed in one part of the body and carried in the blood to other parts of the body, where it stimulates or suppresses cell and tissue activity See Pituitary Gland
a chemical messenger involved in the regulation and coordination of cellular and bodily functions
A chemical substance that is produced by an endocrine gland and released into the bloodstream to have its effect on other parts of the body Also known as a "chemical messenger" For example, thyroid hormone, released by the thyroid gland speeds up or stimulates certain bodily functions
products of living cells that circulate in body fluids and produce a specific effect on the activity of cells
A "messenger" molecule of the body that helps coordinate the actions of various tissues; it is made in one part of the body and transported, via the bloodstream, to other parts, where it has a specific effect on cells 2
A hormone is a substance produced in one part of the body; it passes into the bloodstream and is carried to other distant organs or tissues where it acts to modify their structure or function
A chemical substance formed in one organ or part of the body and carried in the blood to another organ or part
a chemical messenger that is transported (often by the bloodstream) a relatively long distance from its source to the cells it affects Insulin, vasopressin, testosterone, and cortisone are all examples
A hormone is a chemical, usually occurring naturally in your body, that makes an organ of your body do something. a chemical substance produced by your body that influences its growth, development, and condition (hormon, from horman ). Organic compound (often a steroid or peptide) that is produced in one part of a multicellular organism and travels to another part to exert its action. Hormones regulate physiological activities including growth, reproduction, and homeostasis in vertebrates; molting and maintenance of the larval state (see larva) in insects; and growth, bud dormancy, and leaf shedding in plants. Most vertebrate hormones originate in specialized tissues (see endocrine system; gland) and are carried to their targets through the circulation. Among the many mammalian hormones are ACTH, sex hormones, thyroxine, insulin, and epinephrine. Insect hormones include ecdysone, thoracotropic hormone, and juvenile hormone. Plant hormones include ethylene, abscisin, auxins, gibberellins, and cytokinins
chemical substance formed in the body that is carried in the bloodstream to affect another part of the body; an example is thyroid hormone, produced by the thyroid gland in the neck, which affects growth, temperature regulation, metabolic rate, and other body functions
A substance produced in one part of the body and carried by the blood to another part of the body where it causes a response (eg, insulin, produced by the pancreas, that promotes the uptake of glucose by body cells) For more information see The hormones of the human (Kimball's Biology Pages, USA) and Types of hormones (Center for Bioenvironmental Research, Tulane and Xavier Universities, USA)
A chemical substance formed in one organ and carried in the circulation to another organ on which it exerts a stimulating effect; thus, according to Starling, the gastric glands are stimulated by a hormone from the pyloric mucous membrane
A chemical agent that controls various physiological processes within an organism e g adrenaline stimulates the heart; auxins and cytokinins in plants stimulate cell proliferation and growth
a substance formed in endocrine organs and transported by body fluids to activate other specifically receptive organs