Ovulatory phase

Descrição

A-Levels Biology 5 (Nerves and Muscles) Mapa Mental sobre Ovulatory phase, criado por harry_bygraves em 15-06-2013.
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Mapa Mental por harry_bygraves, atualizado more than 1 year ago
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Criado por harry_bygraves mais de 11 anos atrás
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Resumo de Recurso

Ovulatory phase
  1. At about day 13 to 15 in humans, the level of oestrogen increases rapidly. A slow rise in levels of oestrogen in follicular phase inhibits GnRH production however, at a critcial high level, oestrogen stimulates the hypothalamus to secrete more GnRH. GnRH secretion is also enhanced by a temporary increase in FSH and a suuden release of LH from the pituitary gland. This massive outpouring of LH is called the ovulatory surge. The surge of LH and FSH brings about ovulation, the release of a secondary oocyte from an ovarian follicle. These effects are a result of postive feedback.
    1. Immediatly after ovulation, a women is fertile and can concieve if she has sexual intercourse, or if sperm is already present in her oviducts

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