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Topic: Endocrine


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In the News (Fri 13 Nov 09)

  
  Endocrine system - Wikipedia, the free encyclopedia
The endocrine system is a control system of ductless glands that secrete chemical "instant messengers" called hormones that circulate within the body via the bloodstream to affect distant cells within specific organs.
Typical endocrine glands are pituitary, thyroid, and adrenal glands, but not exocrine glands such as salivary glands, sweat glands and glands within the gastrointestinal tract.
The field of medicine that deals with disorders of endocrine glands is endocrinology, a branch of the wider field of internal medicine.
en.wikipedia.org /wiki/Endocrine_system   (517 words)

  
 Endocrine System - MSN Encarta
Hormones from the endocrine organs are secreted directly into the bloodstream, where special proteins usually bind to them, helping to keep the hormones intact as they travel throughout the body.
Endocrine disorders are classified in two ways: disturbances in the production of hormones, and the inability of tissues to respond to hormones.
An endocrinologist evaluating a patient for a possible endocrine disorder relies on the patient's history of signs and symptoms, a physical examination, and the family history—that is, whether any endocrine disorders have been diagnosed in other relatives.
encarta.msn.com /encnet/refpages/RefArticle.aspx?refid=761574274   (2273 words)

  
 Endocrine disruptor - Wikipedia, the free encyclopedia
Endocrine disruptors are exogenous substances that cause adverse biological effects by interfering with the endocrine system and disrupting the physiologic function of hormones.
The endocrine system is made up of glands, which secrete hormones, and receptor cells which detect and react to the hormones.
A variety of chemicals have been found to disrupt the endocrine systems of animals in laboratory studies, and there is strong evidence that chemical exposure has been associated with adverse developmental and reproductive effects on fish and wildlife in particular locations.
en.wikipedia.org /wiki/Endocrine_disruptor   (874 words)

  
 NRDC: Endocrine Disruptors FAQ
The endocrine system is a complex network of glands and hormones that regulates many of the body's functions, including growth, development and maturation, as well as the way various organs operate.
Chemicals suspected of acting as endocrine disruptors are found in insecticides, herbicides, fumigants and fungicides that are used in agriculture as well as in the home.
Endocrine disruptors enter the air or water as a byproduct of many chemical and manufacturing processes and when plastics and other materials are burned.
www.nrdc.org /health/effects/qendoc.asp   (949 words)

  
 Endocrine System
The endocrine system is instrumental in regulating mood, growth and development, tissue function, and metabolism, as well as sexual function and reproductive processes.
Endocrine glands, on the other hand, release more than 20 major hormones directly into the bloodstream where they can be transported to cells in other parts of the body.
Although the endocrine glands are the body's main hormone producers, some non-endocrine organs - such as the brain, heart, lungs, kidneys, liver, thymus, skin, and placenta - also produce and release hormones.
www.kidshealth.org /parent/general/body_basics/endocrine.html   (1273 words)

  
 The Environmental Endocrine Issue Chemical Manufacturers Association - C3.org
Scientists from the public and private sectors are continuing to conduct research to better understand the mechanism of endocrine modulation and to evaluate the relationships between endocrine modulation and breast cancer, male fertility issues, child development and adverse affects on wildlife.
This document provides a description of the issue, background on the endocrine system and a perspective on whether small amounts of chemicals in the environment could be causing adverse health effects by interfering with the endocrine systems of humans and wildlife.
Endocrine glands have receptors that can sense the amount of a specific hormone in the blood, so that the production of the hormone can be increased or decreased.
www.c3.org /chlorine_issues/health/nov96.html   (8324 words)

  
 Endocrine System
The endocrine system shares with the nervous system a role for control and coordination throughout the body.
Endocrine glands which are most influenced by nerve inputs include the pituitary, where the nervous control arises in the hypothalamus, and the adrenal medulla, where the nervous control arises from the sympathetic nervous system, which is part of the autonomic nervous system.
Endocrine glands controlled principally by trophic hormones include the thyroid gland and the adrenal cortex.
departments.weber.edu /CHFam/2570/Endocrine.html   (1470 words)

  
 Exercise 24: Endocrine Organs
In this exercise we'll be concerned with the structure of the pituitary gland, the pineal body, the endocrine portions of the reproductive organs, the endocrine pancreas, the adrenal glands, and the thyroid and parathyroid glands.
Both the testis and the ovary are important endocrine organs, and the hormones they produce are important in normal sexual activity, in maturation of the adult body form, and in controlling estrus and pregnancy.
The ovary is a major endocrine organ, and the variation of hormones in the female reproductive cycle is of great importance, complex enough to require its own exercise We'll deal with the ovarian secretory tissues in the exercise devoted to the female reproductive tract.
education.vetmed.vt.edu /Curriculum/VM8054/Labs/Lab24/Lab24.htm   (6848 words)

  
 Endocrine   (Site not responding. Last check: 2007-11-03)
Furthermore endocrine activities have been identified in certain organs, such as the heart, kidneys, duodenum and liver, which are normally associated with other system functions.
However it is now known that a number of endocrine glands receive direct neural input via the autonomic nervous system and respond to that neural input in concert with the hormonal secretions of the pituitary.
The dispute over the thymus as an endocrine organ was resolved upon identification of a family of peptides that control the proliferation and maturation of primitive lymphocytes into immunologically competent T-cells.
www.bio-logicsolutions.com /endocrin.htm   (2089 words)

  
 Questions about Endocrine Disruptors
By EPA’s working definition, endocrine disruptors "interfere with the synthesis, secretion, transport, binding, action, or elimination of natural hormones in the body that are responsible for the maintenance of homeostasis (normal cell metabolism), reproduction, development, and/or behavior." Many endocrine disruptors are thought to mimic hormones.
Most endocrine disruptors have very low potency as their chemistry is significantly different from the hormones they mimic.
This is not surprising, as the basic function of the endocrine system, in addition to controlling sex characteristics and reproductive functions and responding to perceived hostility (adrenaline release), is to maintain homeostasis (even keel) among the diverse functions of the body.
extoxnet.orst.edu /faqs/pesticide/endocrine.htm   (1722 words)

  
 NRDC: Endocrine Disruption - Overview
In the case of endocrine disruptors and other developmental toxicants, the timing of exposure may be more important than the dose.
Suspected endocrine disrupting chemicals are found in insecticides, herbicides, fumigants, and fungicides that are used in agriculture as well as in the home.
We are working to get endocrine disruptors listed under these important right to know laws so their emissions to air, water, and land can be tracked and reported, and so that if consumers may be exposed they will first be warned.
www.nrdc.org /health/effects/bendrep.asp   (2123 words)

  
 Endocrine Surgery
Endocrine surgery refers to a surgical specialty for diseases of endocrine organs such as the thyroid, parathyroid, adrenal, pituitary and pancreas.
Endocrine surgeons are trained surgeons with special interest in surgical diseases of endocrine organs.
Endocrine surgeons have a major interest in the care of patients with disorders of adrenal gland, pancreas, pituitary, thyroid and parathyroid glands.
www8.utsouthwestern.edu /utsw/cda/dept48035/files/78481.html   (246 words)

  
 Endocrine System
The endocrine system is instrumental in regulating mood, growth and development, tissue function, metabolism, and sexual function and reproductive processes.
Although the endocrine glands are the body's main hormone producers, some other organs not in the endocrine system - such as the brain, heart, lungs, kidneys, liver, and skin - also produce and release hormones.
Once a hormone is secreted, it travels from the endocrine gland that produced it through the bloodstream to the cells designed to receive its message.
kidshealth.org /teen/your_body/body_basics/endocrine.html   (2023 words)

  
 Multiple Endocrine Neoplasia Type 1   (Site not responding. Last check: 2007-11-03)
Endocrine glands are different from other organs in the body because they release hormones into the bloodstream.
Another rare complication is an endocrine tumor inside the chest or in the stomach, known as a carcinoid.
Since the type of pancreatic endocrine cancer associated with MEN1 can be difficult to recognize, difficult to treat, and very slow to progress, doctors have different views about the value of surgery in managing these tumors.
www.endocrine.niddk.nih.gov /pubs/men1/men1.htm   (3075 words)

  
 Endocrine Primer | Endocrine Disruptor Screening Program | US EPA   (Site not responding. Last check: 2007-11-03)
The endocrine system regulates all biological processes from the conception of an organism through adulthood and into old age regulating many functions of a body, including metabolism, blood sugar levels, growth and function of the reproductive system, and the development of the brain and nervous system.
The science related to measuring and demonstrating endocrine disruption is in its' infancy, so validated methods of testing that indicate specific effects of an endocrine disruptor are still being developed.
The Endocrine Disruption Screening Program (EDSP) is mandated to use validated methods for the screening and testing chemicals to identify potential endocrine disruptors, determine adverse effects, dose-response, assess risk and ultimately manage risk under current laws.
www.epa.gov /scipoly/oscpendo/edspoverview/primer.htm   (2536 words)

  
 Endocrine System / Introduction to the Endocrine System
The endocrine system, along with the nervous system, functions in the regulation of body activities.
The word endocrine is derived from the Greek terms "endo," meaning within, and "krine," meaning to separate or secrete.
The secretory products of endocrine glands are called hormones and are secreted directly into the blood and then carried throughout the body where they influence only those cells that have receptor sites for that hormone.
training.seer.cancer.gov /module_anatomy/unit6_1_endo_intro.html   (190 words)

  
 Endocrine System
The endocrine system has a similar job, but uses chemicals to “communicate”.
A hormone is a specific messenger molecule synthesized and secreted by a group of specialized cells called an Endocrine Gland: one of the ductless glands which secretes hormones','(endo = within, inner, crin = separate)','../../sounds/bio105/endocrine.wav')" onMouseOver="window.status='Ductless gland that secretes hormones'; return true">endocrine gland.
Local regulators are hormones with target cells nearby or adjacent to the endocrine gland in question.
biology.clc.uc.edu /courses/bio105/endocrin.htm   (1951 words)

  
 American Association of Endocrine Surgeons - Fellowships - Curriculum and Objectives
The American Association of Endocrine Surgeons (AAES) is a representative body of surgeons from North America, South America and Mexico who have a special interest in the surgery of endocrine gland other than the pituitary.
This association was established in 1981 and continues to grow and expand its membership to include corresponding members (endocrine surgeons from other countries throughout the world) and honorary members (physicians outside the discipline of surgery that have contributed significantly to the field of endocrine surgical disease).
The Endocrine Surgical training center / unit should consist of one or more surgeons who are members of the AAES and have dedicate expertise in the field of Endocrine Surgery.
www.endocrinesurgery.org /fellowships/objectives.html   (1536 words)

  
 Endocrine
The endocrine system and the nervous system both regulate functions in an animal's body.
Endocrine glands secrete chemical substances, called hormones, into the bloodstream.
When the hormone secreted by one endocrine gland stimulates another endocrine gland to secrete a hormone, the second hormone often suppresses production of the first hormone like the heat from a heater turns off a thermostat.
www.ndsu.nodak.edu /instruct/tcolvill/135/endocrine.htm   (149 words)

  
 Multiple endocrine neoplasia - Genetics Home Reference
Multiple endocrine neoplasia is part of a group of disorders that affect the body's network of hormone-producing glands (the endocrine system).
The two major forms of multiple endocrine neoplasia are called type 1 and type 2; they are often confused because of their similar names.
Among the subtypes of multiple endocrine neoplasia type 2, type 2A is the most common form, followed by familial medullary thyroid cancer.
ghr.nlm.nih.gov /condition=multipleendocrineneoplasia   (1134 words)

  
 Endocrine Tumors   (Site not responding. Last check: 2007-11-03)
Endocrine tumors affect endocrine organs, which are organs that secrete hormones that regulate many of the body’s functions.
The parathyroids, which are four small endocrine glands located adjacent to or embedded in the thyroid.
Multiple endocrine neoplasia (MEN) syndromes are familial disorders in which cancer arises simultaneously in more than one endocrine gland.
www.stjude.org /disease-summaries/0,2557,449_2167_7431,00.html   (859 words)

  
 SIU SOM Histology ERG
Endocrine cells are commonly arranged into cords or small clumps, with each cell closely associated with adjacent vessels.
The various endocrine cells of the human body are organized in a few distinctive patterns.
The pancreatic islets are nests of endocrine cells scattered within the pancreas.
www.siumed.edu /~dking2/erg/enguide.htm   (1000 words)

  
 eMedicine - Endocrine Myopathies : Article by Wayne E Anderson, DO   (Site not responding. Last check: 2007-11-03)
The heterogeneity of the endocrine myopathies is illustrated nicely by Rodolico and colleagues, who described 10 patients with primary autoimmune hypothyroidism presenting solely with myopathy.
An endocrine tumor is in the differential diagnosis, and signs of a hormone-secreting tumor may be seen on examination.
Physicians must be alert to the possibility of an endocrine etiology in cases of pure muscle weakness—even in the absence of systemic findings—as endocrine diseases may be associated with significant morbidity or mortality.
www.emedicine.com /neuro/topic125.htm   (2608 words)

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