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Dictionary » P » Progesterone

Progesterone

progesterone

(Science: biochemistry, gynaecology) Produced in the corpus luteum, as an antagonist of oestrogens. Promotes proliferation of uterine mucosa and the implantation of the blastocyst, prevents further follicular development. A steroid hormone (trade name Lipo-Lutin) produced in the ovary; prepares and maintains the uterus for pregnancy.A type of hormone in female mammals with the function of maintaining pregnancy. It is secreted by the corpus luteum and placenta, and its production is stimulated by the presence of other hormones, LH and LTH.


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Human Reproduction System

... and also for ovulation to occur. The negative feedback mechanism whereby the secretion of FSH and LH is halted occurs because the estrogen and progesterone now move in to stimulate the uterine wall to become progressively thicker thus the need for the development of any more follicles is unnecessary. ...

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by mande
Wed Aug 26, 2009 10:15 am
 
Forum: Human Biology
Topic: Human Reproduction System
Replies: 1
Views: 79

Human Reproduction System

HI, I am having trouble with a question in one of my lessons, the question is... Explain why it is necessary that estrogen and progesterone inhibit the secretion of FSH and LH I know that high levels of Estrogen/Progesterone suppress the release of GnRH providing a negative feedback control ...

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by Asanii
Tue Aug 25, 2009 5:25 pm
 
Forum: Human Biology
Topic: Human Reproduction System
Replies: 1
Views: 79

Re: Ingesting Cholsterol

... (used to emulsify dietary fats), which is the only route that cholesterol can exit the body; to serve as a precursor for steroid hormones, e.g. progesterone, testosterone, cortisol; or transport out of liver to be taken up by peripheral tissue and used in membranes (to regulate fluidity).

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by dae
Sun May 04, 2008 8:31 pm
 
Forum: Molecular Biology
Topic: Ingesting Cholsterol
Replies: 5
Views: 983

Re: What kills (and what saves) a corpus luteum?

Its clock is based on the uterus' need for it. It it's not fertilized within 10-14 days then the uterus will in turn no longer need progesterone and estrogen to ready for pregnancy. If the oocyte is fertilized and does becomes a zygote then the corpus luteum will continue to secrete progesterone ...

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by cspacy
Sat May 03, 2008 4:40 pm
 
Forum: Human Biology
Topic: What kills (and what saves) a corpus luteum?
Replies: 3
Views: 1667

What kills (and what saves) a corpus luteum?

... gaps. We've got several textbooks which consistently say that after ovulation the corpus luteum survives for 10-14 days, producing estrogen and progesterone to sustain the endometrium; after that the corpus luteum 'degrades' or 'disintegrates' and flow phase begins. My questions are, what is ...

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by jasonfahy
Fri May 02, 2008 6:42 pm
 
Forum: Human Biology
Topic: What kills (and what saves) a corpus luteum?
Replies: 3
Views: 1667
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