Year 8 Science | Human Reproduction

Question 1

How are the physical changes which a teenager’s body goes through referred to?

Answer 1

Puberty

Question 2

What causes puberty?

Answer 2

Sex hormones

Question 3

Do boy’s or girl’s hips widen during puberty?

Answer 3

Girls

Question 4

Name the 5 key parts of the female reproductive system

Answer 4

Ovary, fallopian tubes, cervix, uterus, vagina

Question 5

Define “gamete”

Answer 5

Sex cells

Question 6

Name the main female reproductive hormone

Answer 6

Oestrogen

Question 7

Define “fertilisation”

Answer 7

Nucleus of male and female sex cell joining

Question 8

Define “ovulation”

Answer 8

Releasing an egg

Question 9

What is the difference between sperm and semen?

Answer 9

Semen is sperm but mixed with the nutrients needed to keep it alive when trying to fertilise an egg

Question 10

How are eggs transported through the oviduct?

Answer 10

They are carried along by small hairs known as cilia

Question 11

What is the role of the cervix?

Answer 11

It is a ring of muscle at the entrance to the uterus, used to keep the baby in place throughout pregnancy

Question 12

What is the role of the amniotic sac?

Answer 12

To act as a shock absorber to protect the developing baby

Question 13

Define “gestation period”

Answer 13

Time take for a baby to develop from fertilisation

Question 14

Define “placenta”

Answer 14

Organ providing foetus with oxygen and nutrients

Question 15

Define “umbilical cord”

Answer 15

Tube connecting foetus to placenta

Question 16

Approximately how long does human pregnancy last for?

Answer 16

9 months

Question 17

What happens to the muscles of the uterus during labour?

Answer 17

They contract, to squeeze baby out

Question 18

State the male and female gametes.

Answer 18

Male: sperm, female: eggs

Question 19

What is implantation?

Answer 19

The embryo implants into the wall of the uterus so it can begin to develop into a baby

Question 20

Define “menstruation”

Answer 20

Losing uterus lining

Question 21

Name the process where a matured egg is released from the ovaries

Answer 21

Ovulation

Question 22

State the average length of the menstrual cycle

Answer 22

28 days

Question 23

What will cause menstruation to stop?

Answer 23

Fertilisation of the egg, malnutrition, menopause, illness

Question 24

What is ovulation and when does it occur?

Answer 24

Ovulation is the release of an egg from an ovary. It occurs on day 14 of the menstrual cycle.