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The Menstrual Cycle (B1 AQA) and use of hormones with fertility
Karten in diesem Stapel (8)
- 1Hormones in the menstrual cycleFSH
Oestrogen
LH
+ progesterone
secreted by pituitary gland + ovaries - 2FSHSecreted by pituitary gland,
Stimulates ovaries to:
A) Secrete Oestrogen
B) Mature an egg - 3OestrogenSecreted by Ovaries
Maintains Uterine lining
Inhibits FSH
Stimulates secretion of LH - 4LH(Luteinising hormone)
Inhibits Oestrogen secretion
Stimulates release of egg
Oestrogen low enough for FSH to no longer be inhibited + stop stimulating LH secretion - 5The Menstrual Cycle Summary> FSH leads to mature egg + oestrogen secretion
> Oestrogen inhibits FSH, maintains lining and leads to LH secretion
> LH leads to release of egg/inhibits Oestrogen
>FSH no longer inhibited by low level and cycle restarts - 6Fertility treatments> Women given FSH and LH to stimulate release of several eggs
> Eggs collected from mother + fertillised by IVF
>When they are tiny balls of cells, 1 or 2 implanted into the mother.. - 7Contraceptives> Contain hormones to inhibit FSH production so no eggs mature.
> Oestrogen or Progesterone - 8Problems with hormones in contraceptivesUsed to contain high levels of oestrogen, leading to significant side effects
Now a much lower dose
Progesterone pills have fewer side effects
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- Beschreibung
- Some flash cards detailing the roles of various hormones in the menstrual cycle, as per the AQA B1 specification. This is all you need to know about each hormone
- Erstellt von
- Emily Y :)
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