Using hormones to treat infertility | Biology | Quizalize & Oak National Academy

Starter quiz

Which hormone is not involved in controlling the menstrual cycle?

progesterone

follicle stimulating hormone

testosterone ✓

luteinising hormone

oestrogen
What does follicle stimulating hormone (FSH) cause?

fertilisation

ovulation

follicles to mature ✓

menstruation

secretion of oestrogen ✓
What does fertilisation produce?

'A zygote' ✓
Which hormone causes ovulation?

'LH' ✓
Match the part to a description of its function.

A

⇔

The egg travels down these oviducts. ✓

B

⇔

Eggs are released by the ovaries. ✓

C

⇔

The cervix is the neck of the uterus. ✓

D

⇔

Sperm is deposited in the vagina during sexual intercourse. ✓

E

⇔

The uterus is where a fertilised egg will embed and grow until birth. ✓
Put these steps in order to describe the menstrual cycle, starting with menstruation.

1

⇔

uterus lining breaks down and leaves the body

2

⇔

follicle stimulating hormone (FSH) stimulates a follicle to mature

3

⇔

oestrogen stimulates the release of luteinising hormone (LH)

4

⇔

ovulation

5

⇔

progesterone is released to maintain the womb lining

6

⇔

progesterone levels drop

Exit quiz

True or false? Infertility only affects females.

True

False ✓
What can cause infertility?

regular ovulation

low sperm count ✓

low levels of specific reproductive hormones ✓

keeping fit by running

low quality sperm ✓
Which hormones can be used to increase fertility in females?

progesterone

FSH ✓

oestrogen

LH ✓

testosterone
Put these stages of IVF in the right order.

1

⇔

FSH given to female to develop eggs.

2

⇔

LH given to trigger egg release.

3

⇔

Eggs are extracted.

4

⇔

Eggs incubated with sperm.

5

⇔

Fertilised eggs stimulated to divide into an embryo.

6

⇔

Embryos implanted into mother’s uterus.
What are the risks associated with in-vitro fertilisation (IVF) treatment?

may lead to multiple births ✓

emotionally stressful for the couple ✓

not all embryos are implanted

hormones can have side effects ✓
True or false? Each cycle of IVF has a 50% chance of success.

True

False ✓

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Lesson Details

Key learning points

Infertility is the inability to become pregnant (conceive).
In adult human females, some types of infertility are caused by problems with hormones that control the menstrual cycle.
Hormones can be used as a treatment for these types of infertility.
The use of hormones in IVF treatment.

Common misconception

IVF is highly effective without side effects. People can already choose the features of a baby. All people can have IVF from the NHS.

IVF is less than 40% effective and this decreases with the age of the mother over 35. Genetic testing of embryos can be used to look for a disease, but genes cannot be altered. There is criteria for receiving IVF from the NHS and it is limited.

Keywords

Infertility - The inability to become pregnant (conceive).
Menstrual cycle - A monthly cycle which involves the maturation and release of an egg, and menstruation.
Ivf - In vitro fertilisation, in which an embryo is formed in a laboratory and then inserted into the uterus of the mother.
Fsh - Follicle stimulating hormone, which matures follicles containing eggs in the ovaries.
Embryo - A development stage when a fertilised egg starts to divide.