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The History and Scope of Psychology Module 1
The History and Scope of Psychology Module 1

... (chemicals) released from the sending neuron travel across the synapse and bind to receptor sites on the receiving neuron, thereby influencing it to generate an action potential. Watch: neurotransmitters ...
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Chapter 16 - apsubiology.org
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Endocrine System: http://science.nhmccd.edu/biol/ap1int.htm
Endocrine System: http://science.nhmccd.edu/biol/ap1int.htm

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ANATOMIA FUNCTIONALA/ FIZIOPATOLOGIA HIPOTALAMUSULUI
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... can be divided into fat and fat-free or lean body mass with certain characteristics. These techniques are relatively costly, time-consuming and do not give information on the distribution of the fat. Techniques such as bioelectrical impedance rely on the fact that fat is not as good an electrical co ...
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The Thyroid Gland - life.illinois.edu
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pituitary tumor - American Academy of Ophthalmology
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... Unlike the nervous system with which the endocrine works similarly to and in some cases with, the endocrine system sends messages to cells to perform a necessary action. Hormones are messenger molecules. The endocrines system is comprised of small organs dispersed throughout the body and secrete hor ...
Hormone - WordPress.com
Hormone - WordPress.com

... corticosteroids: aldosterone and cortisol FSH stimulates follicle growth and ovarian estrogen production; stimulates sperm production and androgen-binding protein LH has a role in ovulation and the growth of the corpus luteum; stimulates androgen secretion by interstitial cells in testes ...
Chapter 45 – Hormones and the Endocrine System
Chapter 45 – Hormones and the Endocrine System

... In endocrine and neuroendocrine pathways, this outgoing signal, called an efferent system, is a hormone or neurohormone, which acts on particular effector tissues and elicits specific physiological or developmental changes. ...
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... representation of the posterior pituitary ...
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...  Steroid hormone levels change throughout the day and throughout the lifespan  FDA recommends administration to a small group  There are many possible side effects of exogenous administration  Positive and negative effects of anabolic steroids are difficult to measure ...
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... structure and action; they are the androgens (C19), the estrogens (C18), the progestins (C21), and the corticosteroids (C21). All are synthesized from cholesterol . ...
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Endocrine disruptor



Endocrine disruptors are chemicals that, at certain doses, can interfere with the endocrine (or hormone) system in mammals. These disruptions can cause cancerous tumors, birth defects, and other developmental disorders. Any system in the body controlled by hormones can be derailed by hormone disruptors. Specifically, endocrine disruptors may be associated with the development of learning disabilities, severe attention deficit disorder, cognitive and brain development problems; deformations of the body (including limbs); breast cancer, prostate cancer, thyroid and other cancers; sexual development problems such as feminizing of males or masculinizing effects on females, etc. The critical period of development for most organisms is between the transition from a fertilized egg into a fully formed infant. As the cells begin to grow and differentiate, there are critical balances of hormones and protein changes that must occur. Therefore, a dose of disrupting chemicals may do substantial damage to a developing fetus. The same dose may not significantly affect adult mothers.There has been controversy over endocrine disruptors, with some groups calling for swift action by regulators to remove them from the market, and regulators and other scientists calling for further study. Some endocrine disruptors have been identified and removed from the market (for example, a drug called diethylstilbestrol), but it is uncertain whether some endocrine disruptors on the market actually harm humans and wildlife at the doses to which wildlife and humans are exposed. Additionally, a key scientific paper, published in the journal Science, which helped launch the movement of those opposed to endocrine disruptors, was retracted and its author found to have committed scientific misconduct.Found in many household and industrial products, endocrine disruptors are substances that ""interfere with the synthesis, secretion, transport, binding, action, or elimination of natural hormones in the body that are responsible for development, behavior, fertility, and maintenance of homeostasis (normal cell metabolism)."" They are sometimes also referred to as hormonally active agents, endocrine disrupting chemicals, or endocrine disrupting compounds (EDCs).Studies in cells and laboratory animals have shown that EDs can cause adverse biological effects in animals, and low-level exposures may also cause similar effects in human beings.The term endocrine disruptor is often used as synonym for xenohormone although the latter can mean any naturally occurring or artificially produced compound showing hormone-like properties (usually binding to certain hormonal receptors). EDCs in the environment may also be related to reproductive and infertility problems in wildlife and bans and restrictions on their use has been associated with a reduction in health problems and the recovery of some wildlife populations.
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