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AQA CORE BIOLOGY > Controlling Fertility > Flashcards

Controlling Fertility Flashcards

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1
Q

What happens if oestrogen is used everyday?

A

It inhibits the production of FSH and after a while egg development and production stop and stay stopped

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2
Q

How does progesterone reduce fertility?

A

Stimulates the production of thick cervical mucus which prevents sperm getting through and reaching the egg

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3
Q

What is the pill?

A

An oral contraceptive

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4
Q

When was the first version of the pill made?

A

1950s

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5
Q

What did the first version of the pill contain?

A

High levels of oestrogen and progesterone

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6
Q

What are the positive sides of the pill?

A

Over 99% effective for preventing pregnancy

Reduces risk of getting some types of cancer

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7
Q

What are the negatives sides of the pill?

A

It is not 100% effective
Causes side effects
Does not protect against STDs

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8
Q

What are some side effects of the pill?

A

Headaches
Nausea
Irregular menstrual bleeding
Fluid retention

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9
Q

What other contraceptive pill is there?

A

Progesterone only pill

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10
Q

What is the progesterone only pill like?

A

It has fewer side effects but is not as effective

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11
Q

What happens if women have too low levels of FSH?

A

Eggs do not mature
No eggs released
Women can not get pregnant

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12
Q

How can women use LH and FSH to stimulate egg release?

A

Injection

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13
Q

What are the positive sides of increasing fertility?

A

Helps women get pregnant

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14
Q

What are the negative sides of increasing fertility?

A

It does not always work

Too many eggs could be stimulated resulting in multiple pregnancies such as twins and triplets

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15
Q

What does IVF help?

A

Couples have children

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16
Q

What does IVF stand for?

A

In vitro fertilisation

17
Q

What does IVF involve?

A

Collecting eggs from woman’s ovaries
Fertilising them in a lab using the man’s sperm
They are grown into embryos
Once the embryos are tiny balls of cells they are transferred to a woman’s uterus to improve their chance of pregnancy

18
Q

What are the positives of IVF?

A

Fertility treatment can give an infertile couple a child

19
Q

What are the negatives of IVF?

A

Some women have a strong reaction to he hormones
Some reports of increased risk of cancer
Multiple births

20
Q

What are some reactions women can have to the hormones?

A

Abdominal pain
Vomiting
Dehydration

AQA CORE BIOLOGY (28 decks)

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