Across

2. The first trimester lasts about le weeks.

3. The connects the fetus to the mother's uterus and provides
nutrients, respiration, and excretion.

5. By the 6th month the fetus weighs about

6. The downy hair that covers a baby's body around the 22nd week of
pregnancy is called

7. By the week of pregnancy, the regular flicker of a heartbeat is first visible on an ultrasound.

9. The fertilized egg is called a(n)

13. A nutrient-rich liquid that nourishes sperm and protects them from acidity of the vagina is

16. During which phase of the menstrual cycle does the egg have the best chance of getting fertilized?

17. The baby's eyes are fully open in the trimester.

9. One menstrual cycle usually lasts about a(n)
.Men have openings down below.

21. Sperm matures in the

24. Doctors consider the week of pregnancy to be when a woman had her last period.

26. The baby is full term at about weeks.

28. Women have_ openings down below.

29. When the egg is in the there is a good chance of
fertilization.

Down

1. Sperm is produced in the

4. By the 17th to 21st weeks, the fetus's skin is protected with a greasy, cheese-like coating called

8. The fetus begins to hear during what trimester?

10. By the 8th week of pregnancy, the embryo is called a(n).

11. _ begins between the ages of 9 and 15.

12. After a zygote has divided into about 100 cells, it is called a(n)

14. If the egg is fertilized, won't occur.

15. The due date of the baby is calculated at weeks.

19. If fertilized, the egg will implant itself in the woman's

22. Urine and semen exit a male's body through a tube called the

23. There are 2 % million in each drop of ejaculate.

25. The releases an egg.

27. The testes are contained in an external sac called the