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Hormones are your body's chemical messengers. They travel in your bloodstream to tissues or organs. They work slowly, over time, and affect many different processes, including
Endocrine glands, which are special groups of cells, make hormones. The major endocrine glands are the pituitary, pineal, thymus, thyroid, adrenal glands and pancreas. In addition, men produce hormones in their testes and women produce them in their ovaries.
Hormones are powerful. It takes only a tiny amount to cause big changes in cells or even your whole body. That is why too much or too little of a certain hormone can be serious. Laboratory tests can measure the hormone levels in your blood, urine or saliva. Your health care provider may perform these tests if you have symptoms of a hormone disorder. Home pregnancy tests are similar - they test for pregnancy hormones in your urine.
A '''hormone''' (from Greek language ''horman'' - "to set in motion") is a chemical compound messenger from one cell (biology) (or group of cells) to another. All multicellular organisms (including Plant hormone) produce hormones. The best known hormones are those produced by endocrine glands of vertebrate animals, but hormones are produced by nearly every organ (anatomy) system and Biological_tissue type in a human or animal body. Hormone molecules are secreted (released) directly into the bloodstream, other body fluids, or into adjacent tissues. They move by circulation or diffusion to their target cells, which may be nearby cells (paracrine action) in the same tissue or cells of a distant organ of the body. The function of hormones is to serve as a signal to the target cells; the action of hormones is determined by the pattern of secretion and the signal transduction of the receiving tissue. Hormone actions vary widely, but can include stimulation or inhibition of growth, induction or suppression of apoptosis (programmed cell death), activation or inhibition of the immune system, regulating metabolism and preparation for a new activity (e.g. fighting, fleeing, mating) or phase of life (e.g. puberty, caring for offspring, menopause). In many cases, one hormone may regulate the production and release of other hormones. Many of the responses to hormone signals can be described as serving to homeostasis metabolic activity of an organ or tissue. Hormones also control the reproductive cycle of virtually all multicellular organisms.
Midway Prep - At this school, a melting pot of teenage hormones, characters' lives can be perfect one minute and a nightmare the next.
Medica International Pharmaceuticals - Hormone treatments for male to female transformation, prescription drugs.
Albany Gender Identity Clinic - From beard retardant to full gender reassignment, hormone products for transvestites and transsexuals.
G and B Orchid Laboratory Nursery, Inc. - Complete orchid catalog of tissue media, chemical supplies, plant hormones, glassware, laboratory equipment, HEPA filters, supplies, orchids, stem propagations, Mexican and Ecuadorian species, growing instructions, and laboratory procedures.
Atlantis Hydroponics - Suppliers of hydroponic equipment, nutrients, hormones, complete hydro and lighting systems. Also has stores in Georgia, USA.
Mixed Signals - A book by Hugh Crone that explains how neurotransmitters, hormones and other chemical messengers control all bodily reactions to outside events.
Natural Hormonal Enhancement - A natural, holistic, hormonal approach to health, substantiated by over 1700 pinpoint scientific references.
I Conquered Fibromyalgia and Turned Horror Moans Back Into Hormones - Authored by a fibromyalgia sufferer who developed an innovative treatment and has the fibromyalgia syndrome in remission.
Laid in Montana - Offering a full line of all natural health and beauty or pet and livestock products made from emu which are raised on locally grown feed with no antibiotics, medicine or hormones added.
Ethocyn Products - Synthetic compounds, manufactured by Chantal Pharmaceutical block certain hormone receptors in the skin providing rejuvenatation effects from increased elasticity of the skin.