1. Can you read through the word lists for this topic please?
Do now!
Can you read through the word lists for this topic please?
He’s going
to blow!
Be careful
Good
Neutral
Excellent
MOODOMETER

2. The Menstrual Cycle
What can you remember?

3. TRUE or FALSE?
A woman normally has a period every 23 days

4. It is normally every 28 days
TRUE or FALSE?
A woman normally has a period every 23 days
It is normally every 28 days

5. TRUE or FALSE?
Menstruation is the name for when the egg is released from the ovary
¡Estoy libre!

6. This is called OVULATION
TRUE or FALSE?
Menstruation is the name for when the egg is released from the ovary
This is called OVULATION

7. TRUE or FALSE?
If sperm are present the egg is normally fertilised in the oviduct

8. TRUE or FALSE?
If sperm is present the egg is normally fertilised in the oviduct

9. TRUE or FALSE?
A woman stops producing eggs between the ages of 45 and 55. This is called menstruation.

10. This is called the MENOPAUSE
TRUE or FALSE?
A woman stops producing eggs between the ages of 45 and 55. This is called menstruation.
This is called the MENOPAUSE

11. TRUE or FALSE?
An egg is released roughly halfway between periods (after about 14 days)

12. TRUE or FALSE?
An egg is released roughly halfway between periods (after about 14 days)

14. Menstrual Cycle 2
Can you complete the sheet “Menstrual Cycle 2”?

15. The rest of today’s lesson (and tomorrow!)
Know how a fertilised egg develops into an embryo
Know about implantation
Know how the developing baby is protected
Know how the developing baby is supplied with food and oxygen and how waste is taken away.
Know how long pregnancy lasts

16. Sexual reproduction

17. Sexual reproduction
Requires two parents, a male and female.

18. Sexual reproduction
Both have sex organs

19. Sexual reproduction
The sex organs make sex cells

20. Sexual reproduction
In male animals the sex cells are called sperm, made in sex organs called testes (testis is singular)
I can stay alive in the vagina for up to 3 days waiting for an egg to be released.

21. Sexual reproduction
In female animals the sex cells are called eggs, made in sex organs called ovaries.
An egg is released from the ovaries about every 28 days. This is called ovulation.

22. Sexual reproduction
During sexual reproduction the sperm and egg join together (fertilisation)

23. Sexual reproduction
A fertilised egg is produced.

24. Sexual reproduction
The egg cell begins to divide forming a ball of cells.
Stem cells – have the potential to become any type of cell

25. Sexual reproduction
It may take several days to reach the uterus and be implanted in the soft lining. It is now an embryo.

26. After 8 weeks I am called a fetus.
Sexual reproduction
Finger–like projections grow into the uterus forming a plate like structure called the placenta.
After 8 weeks I am called a fetus.

27. Sexual reproduction
The umbilical cord joins the fetus to the placenta.

28. The placenta
In the placenta food and oxygen diffuse from the mother’s blood to the fetus’ blood, and carbon dioxide and waste products diffuse the other way.

29. The placenta
In the placenta the blood of the fetus flows close to the blood of the mother, but they do not mix.
Why?

30. The placenta
In the placenta the blood of the fetus flows close to the blood of the mother, but they do not mix.
The mother’s blood under higher pressure would burst the vessels in the developing fetus.
They may have different blood types.

31. Amnion
The fetus is surrounded by a fluid-filled sac (amnion) filled with amnionic fluid. This protects the baby.

32. Week 8 Baby's spinal column are beginning to form around week 5
Heart is beating
Lungs are formed
Eyes and ears are developing
All internal organs are in
place by week 8
Genital organs are visible

33. Week 12 Inner ear, external ears, eyes, mouth and nose are developing
Heart is pumping blood
to all parts of the body

34. Week 16 Baby is now completely formed
From now on, growth will be rapid
Heartbeat can be heard with ultrasound
Baby's weight has more than doubled from week 15 to week 16
Baby is moving quite vigorously

35. Week 20 Baby is covered in fine hair Muscles are developing rapidly
Teeth are beginning to form
Hair is growing on baby's head
Baby is very active

36. With special care I could survive if born now
Week 24
Baby can suck its thumb
Baby can hiccup and cough
Baby weighs just over 1 pound
With special care I could survive if born now

37. Week 28 Vernix coats the baby's skin Baby's lungs are mature
Fat is starting to accumulate
Baby weighs approximately
2 pounds

38. Week 32 Most babies are in the head down position Baby weighs
approximately 3.5 pounds

39. Week 36 Baby continues to gain weight The irises of the eyes
are now blue
Baby weighs
approximately 5 pounds

40. Week 40 Most of the vernix on the baby is gone Baby's eyes are open
and it can distinguish light

41. Time to leave!

42. The big questions When does new life begin? When is it a person?
When is it alive?

43. Can you complete the sheets “Pregnancy” and “The Developing Fetus”

44. Can you then try reading pages 27 and 28?