Menstrual Cycle

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Menstrual Phase
(Days 1-5): Uterus sheds it's inner lining of soft tissue and blood vessels which exits the ****** in the form of menstrual fluid. FSH levels are high until oestrogen is produced which inhibits FSH production and leads to LH production
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Follicular Phase Pt 1
(Days 1-13): Hypothalamus produces GnRH. Pituitary responds by secreting FSH and LH which results in the stimulation of egg cells in the ovaries growing.
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Follicular Phase Pt 2
One of these eggs begins to mature in a sac-like structure called a follicle. It takes 13 days for the egg to reach maturity. The follicle secretes oestrogen = uterus develops the endometrium.
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Follicle
Follicle -> Corpus luteum; produces lots of oestrogen and progesterone.
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Ovulation Phase
(Day 14): Pituitary produces a large amount of LH = Release of matured egg cell. Egg enters fallopian tubes via cilia of the fimbriae. With an increase in hormones; Hypothalamus decreases GnRH to anterior pituitary = No FSH or LH produced.
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Luteal Phase Pt 1
(Days 15-28): Egg released stays in fallopian tubes for 24 hours (No sperm = disintegration of egg; No Corpus luteum = Oestrogen and Progesterone levels decrease) When levels of O+P are low menstruation occurs.
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Luteal Phase Pt 2
Message is then sent to the hypothalamus that hormone levels are low. This starts the cycle again with the secretion of GnRH.
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Other cards in this set

Card 2

Front

(Days 1-13): Hypothalamus produces GnRH. Pituitary responds by secreting FSH and LH which results in the stimulation of egg cells in the ovaries growing.

Back

Follicular Phase Pt 1

Card 3

Front

One of these eggs begins to mature in a sac-like structure called a follicle. It takes 13 days for the egg to reach maturity. The follicle secretes oestrogen = uterus develops the endometrium.

Back

Preview of the back of card 3

Card 4

Front

Follicle -> Corpus luteum; produces lots of oestrogen and progesterone.

Back

Preview of the back of card 4

Card 5

Front

(Day 14): Pituitary produces a large amount of LH = Release of matured egg cell. Egg enters fallopian tubes via cilia of the fimbriae. With an increase in hormones; Hypothalamus decreases GnRH to anterior pituitary = No FSH or LH produced.

Back

Preview of the back of card 5
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