Hormonal and non-hormonal methods of contraception | Biology

Starter quiz

True or false? Every woman's menstrual cycle is exactly 28 days long.

True

False ✓
Put these events of the menstrual events in order, starting with menstruation.

1

⇔

Uterus lining breaks down.

2

⇔

FSH is released and causes a follicle to mature and oestrogen to be released.

3

⇔

Oestrogen causes the uterus lining to regrow and LH to be secreted.

4

⇔

LH causes ovulation.

5

⇔

LH and FSH cause the empty follicle to release progesterone.

6

⇔

Progesterone inhibits LH and FSH.
When the nuclei of a sperm and egg cell fuse this is called?

'Fertilisation' ✓
What does STI stand for?

'Sexually transmitted infection' ✓
Match the hormone to its effect.

Progesterone

⇔

maintains the uterus lining ✓

LH

⇔

causes ovulation ✓

FSH

⇔

causes follicle maturation ✓
What are the three effects of oestrogen?

uterus lining grows ✓

causes the uterus lining to breakdown

inhibits FSH secretion ✓

causes LH to be released ✓

causes progesterone to be released

Exit quiz

Which two hormones can be used in hormonal contraception?

FSH

oestrogen ✓

LH

progesterone ✓

testosterone
Which methods of contraception are hormonal?

injection ✓

pill ✓

diaphragm

female condom

patch ✓
True or false? Non-hormonal methods of contraception are for males only.

True

False ✓
What are the risks associated with hormonal contraception such as the pill?

decrease the risk of some cancers

changes in weight ✓

changes in mood ✓

increase blood pressure ✓

increase the risk of some cancers ✓
Which methods of contraception protect against sexually transmitted infections?

condoms ✓

the pill

injection

diaphragm

IUD/IUS
Who is correct?

Andeep: Taking the pill will mean that you don't ovulate. ✓

Sam: Taking the pill will mean more follicles mature, leading to more ovulation.

Izzy: Taking the pill will cause you to have a period all the time.

Jacob: Taking the pill will prevent the maturation of follicles. ✓

Worksheet

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Presentation

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Video

Lesson Details

Key learning points

Hormones can be used as a contraceptive to prevent pregnancy by disrupting the menstrual cycle.
Some oral hormone contraceptive pills prevent ovulation. If no egg is released, fertilisation cannot take place.
Reasons why hormone pills may not be 100% effective (e.g. missing/late dose, taking after ovulation).
Non-hormonal contraceptives act as a barrier to prevent sperm from reaching the egg, so fertilisation cannot occur.
Evaluating benefits and risks of hormonal and non-hormonal (barrier) methods of contraception (including STIs).

Common misconception

The contraceptive pill can protect from STIs; that all contraception is 100% effective; there are no side effects to hormonal contraception.

Discuss barrier methods and their benefit in preventing STIs, oral contraceptive can be affected by user error or illness. Oral contraception has side effects but these are less in modern times.

Keywords

Oral contraceptive pill - A contraceptive method; a pill taken regularly, containing hormones.
Ovulation - Process where an egg is released from an ovary.
Fertilisation - Process where the sperm and the egg fuse in the fallopian tube.
Risk - The chance of something causing harm or leading to unwanted consequences.
Sti - Sexually transmitted infection.