chapter 4

1. transfer similar to in vitro, except the ovum has been donated by another women
3. twins If the cell mass decided to split in half and then divide, this would cause two embryos resulting in
5. an egg cell
8. The inability to become pregnant. More and more common nowadays. There are some medications that can help for both men and women but are not always 100%effective.
9. mother a woman who becomes pregnant to have a baby for another woman. This requires legal arrangements to be made.
12. vitro fertilization Doctor takes a mature ovum from the woman and sperm from the man. If the ovum becomes fertilized the doctor inserts it into the women's uterus with hopes the zygote with attached itself.
13. births The amount of children a woman will give birth to at one time is determined through conception or soon after.
14. when sperm reaches the fallopian tubes,it may penetrate and fertilize the ovum

2. Sometimes in pregnancy the baby does not develop normally which can cause the baby to die.
4. Sac a sac that fills with fluid and surrounds the embryo. This amniotic fluid protects the baby. It cushions the embryo from all bumps or falls the mother may have.
6. Tube connects the ovary to the uterus
7. The organ in a women's body in which a baby develops during pregnancy
9. a male cell
10. Insemination A doctor injects sperm into a woman's uterus during ovulation
11. about every 28 days when an ovum is released by one of the women's to ovaries
15. is what the developing baby is called from about the third week of pregnancy to the eight weeks of pregnancy. During this stage the embryo grows rapidly.