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Oestrogen

oestrogen

(Science: endocrinology, hormone) A generic term for oestrus producing steroid compounds, the female sex hormones.

In humans, oestrogen is formed in the ovary, possibly the adrenal cortex, the testis and the foetoplacental unit, it has various functions in both sexes. It is responsible for the development of the female secondary sex characteristics and during the menstrual cycle it acts on the female genitalia to produce an environment suitable for the fertilization, implantation and nutrition of the early embryo.

Oestrogen is used in oral contraceptives and as a palliative in cancer of the breast after menopause and cancer of the prostate, other uses include the relief of the discomforts of menopause, inhibition of lactation and treatment of osteoporosis, threatened abortion and various functional ovarian disorders. A general term for female steroid sex hormones that are secreted by the ovary and responsible for typical female sexual characteristics.A female [[hormone produced in the [[ ovary beginning at [[puberty, which promotes the presence of secondary sexual characteristics and is also found in small amounts in males.


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Menstural cycle

It seems (from the book and several websites) that initially, at low conc. oestrogen inhibits FSH and LH. As the follicle matures and oestrogen levels rise FSH and LH are stimulated. My questions are 1) If low levels of oestrogen inhibit FSH (and LH) how can ...

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by jsmith613
Tue Feb 07, 2012 8:52 pm
 
Forum: General Discussion
Topic: Menstural cycle
Replies: 0
Views: 376

Human Reproduction System

... move in to stimulate the uterine wall to become progressively thicker thus the need for the development of any more follicles is unnecessary. Both oestrogen and progesterone alone signals the hypothalamus and the pituitary gland to stop further secretion of FSH and LH hence the levels of both FSH ...

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by mande
Wed Aug 26, 2009 10:15 am
 
Forum: Human Biology
Topic: Human Reproduction System
Replies: 1
Views: 4816

Androgen and oestrogen deficiency or inhibition

Hello all. I would like to discuss this topic of oestrogen and androgen deficiency, and gather some information about it. Besides their effects on sexual characteristics, their development and sexual regulation, what are the other effects of androgens ...

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by Infotropism
Fri Aug 29, 2008 11:50 pm
 
Forum: Human Biology
Topic: Androgen and oestrogen deficiency or inhibition
Replies: 0
Views: 2573

Being in love...

... Could you imagine that, in all three stages (which are lust, attraction and attachment) the major role play the hormones like: testosterone, oestrogen, dopamine, oxytocin and the others. Does it make as more human or an animal? Could you imagine that “our” decisions about choosing a partner ...

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by Sysia_sf
Sun Nov 18, 2007 2:30 pm
 
Forum: Human Biology
Topic: Being in love...
Replies: 23
Views: 7269

Re: LH

... slowly (effect of FSH production cauising development of thecal cells of oocyte) Day 14 ('ovulation') = LH surge (positive feedback due to oestrogen) Day 14-28 = High progesterone -> Inhibition of LH [NB. Day 28 is menstration] Pregnancy: High progesterone production -> Inhibition ...

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by Revenged
Tue Jul 03, 2007 11:01 pm
 
Forum: General Discussion
Topic: LH
Replies: 7
Views: 4301
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