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BIOLOGY P2 > Menstrual Cycle > Flashcards

Menstrual Cycle Flashcards

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1
Q

How long is the menstrual cycle?

A

28 Days

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1
Q

What 4 hormones is the menstrual cycle controlled by?

A

FSH, LH, Oestrogen and Progesterone

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2
Q

What is FSH?

A
  • Triggers egg reopening
  • Triggers oestrogen production
  • From the pituitary gland
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3
Q

What is Oestrogen?

A
  • Suppresses the production of FSH
  • Stimulates the production of LH
  • From the ovaries
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4
Q

What is LH?

A
  • Triggers the release of the egg (ovulation)
  • From the pituitary gland
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5
Q

What happens in the menstrual cycle from the days 1-6? (Menstruation)

A
  • Changes in the ovaries
  • Follicles immature
  • Uterus lining breaks

In Hormones, the pituitary gland releases FSH.

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6
Q

What happens in the menstrual cycle from the days 6-13? (Proliferation)

A
  • Eggs starts to develop in the ovaries
  • Uterus lining repairs

FSH causes new eggs to develop and it releases oestrogen.

Oestrogen causes FSH to stop preventing more eggs developing, starts to releases LH and it gets the uterus lining to thicken.

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7
Q

What happens in the menstrual cycle from the day 14? (Ovulation)

A
  • Follice releases egg in the ovaries
  • Uterus lining remains thick

The high LH level causes the follicle to bust and release egg into the oviduct.

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8
Q

What happens in the menstrual cycle after day 15?

A

Follice empties and becomes corpus luteum (yellow body) and the egg dies

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9
Q

What promotes the release of oestrogen in the menstrual cycle?

A

FSH

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10
Q

What maintains the lining of the uterus after ovulation in the menstrual cycle?

A

Progesterone

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11
Q

What promotes the growth and maturity of a Follice in the ovaries? (Menstrual cycle)

A

FSH

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12
Q

What builds up and repairs the lining of the uterus after menstruation in the menstrual cycle?

A

Oestrogen

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13
Q

What induces ovulation to occur from the ovary in the menstrual cycle?

A

LH

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14
Q

What is produced by the pituitary and carried by the blood in the menstrual cycle?

A

LH and FSH

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15
Q

What inhabits the production of FSH in the menstrual cycle?

A

Oestrogen

16
Q

Once the egg is released, what hormone is released from the empty follicle in the menstrual cycle?

A

Progesterone

17
Q

What inhabits the production of both FSH and LH in the menstrual cycle?

A

Progesterone

18
Q

What is produced and secreted by the ovaries in the menstrual cycle?

A

Oestrogen and Progesterone

19
Q

What stimulates the release of LH in the menstrual cycle?

A

Oestrogen

20
Q

Once what’s levels are decreased, can the lining of the uterus fall away and is shed during menstruation in the menstrual cycle?

A

Progesterone

BIOLOGY P2 (10 decks)

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