Developing a Foetus

• Biology
• Lower Secondary (Key Stage 3)

Penis

Testes

Scrotum

Sperm duct

Urethra

Glands

Semen

Vagina

Cervix

Oviduct

Ovary

Uterus

Urethra

Give an adaptation of a sperm cell and explain it.

The egg is produced in the ovary.

1. True
2. False

The egg moves through the oviduct away from the uterus.

1. True
2. False

Fertilisation is where the sperm enters the uterus through the cervix.

1. True
2. False

When the sperm and egg nuclei combine, there are 23 pairs of chromosomes.

1. True
2. False

Where else might an egg implant? What do you think would happen?

What does infertility mean?

What might cause infertility?

Does this cause infertility:

High sperm count.

1. Yes
2. No

Does this cause infertility:

Many eggs being released.

1. Yes
2. No

Does this cause infertility:

Blocked oviducts.

1. Yes
2. No

Does this cause infertility:

Sperm that don't swim properly.

1. Yes
2. No

The time between the gametes joining and birth of a baby is called...

1. Fertilisation
2. Implantation
3. Gestation
4. Adolescence

An elephant's gestation period is much longer than a human's. Why do you think that is?

How does the foetus get everything it needs to grow during gestation?

This structure provides the foetus with oxygen and nutrients from the mother's blood.

1. Placenta
2. Uterus
3. Amniotic fluid
4. Umbilical cord

This structure protects the foetus from bumps.

1. Placenta
2. Uterus
3. Amniotic fluid
4. Umbilical cord

This structure removes carbon dioxide and provides a barrier to infection.

1. Placenta
2. Uterus
3. Amniotic fluid
4. Umbilical cord

This structure connects the placenta to the foetus.

1. Placenta
2. Uterus
3. Amniotic fluid
4. Umbilical cord

Label the diagram of the foetus.

Baby

Cervix

Uterus lining

Placenta

Umbilical cord

Vagina

Amniotic fluid

Match the structure to its function (job).

Carries oxygen, food and waste between the mother and foetus.

Takes oxygen and food from the mother's blood and puts waste into the mother's blood.

Protects the foetus.

Placenta

Amniotic fluid

Umbilical cord

If the placenta was not attached properly between the mother and baby, what effects might this have?

During birth the ................... relaxes.

1. Cervix
2. Uterus

During birth the ................... contracts.

1. Cervix
2. Uterus