2.5 Fertilization and Pregnancy

2.5 Fertilization and Pregnancy

Textbook page 37-39

Key terms

• Fertilization - process that sperm fuses with ovum (egg) to form a zygote.

• Pregnancy - the rapid growth and development of baby in the womb up until birth

• Embryo - ball of cells formed from Zygote

• Implantation - The process where the embryo imbeds in the uterine lining.

• placenta - the organ where the baby develops during pregnancy

Pregnancy continued

Pregnancy

• Fetus - called this after 8 weeks after fertilization where embryo is clearly human

• umbilical cord - attaches the fetus to the placenta

• amnion - a fluid sac that surrounds the fetus

• amniotic fluid - protects the baby from harm.

• gestation period - 40 week period taken for full development.

Multiple Choice

What structure protects and cushions the fetus throughout its prenatal development?

• amniotic sac and fluid
• placenta
• umbilical cord
• vagina

Multiple Choice

Supplies nutrients to the fetus

• Amnion
• Ovum
• Placenta
• Umbilical cord

3 stages of Birth

• expansion of cervix to allow baby's head to pass through the vagina

• strong contractions of uterus to push the baby out

• Stronger contractions of the uterus to expel the umbilical cord and placenta.

Multiple Choice

what the baby is called from 8 weeks until birth

• embryo

• fetus

• baby

• infant

Multiple Choice

Choose the correct sequence to show the development of the foetus.

• Zygote > Fetus > Embryo > Baby

• Zygote > Embryo > Fetus > Baby

• Embryo > Zygote > Fetus > Baby

• Embryo > Fetus > Zygote > Baby

Multiple Choice

In which period fetus will formed completely?

• week 1-4

• week 10-19

• week 20-37

• week 38-40

Multiple Choice

Following implantation, and until the 9th week of pregnancy, this would be called a(n)

• blastocyst
• zona
• embryo
• fetus

Multiple Choice

Name the process where the embryo implants onto the uterine lining of uterus.

• Plantation

• Implantation

• Pregnancy

• Development

Multiple Choice

After fertilisation, the zygote will divide to form ___________________

• a baby

• a foetus

• an embryo

• implantation

Multiple Choice

The developing baby is called this during weeks 0-2 of pregnancy

• Zygote
• Fetus
• Embryo
• Baby

Multiple Choice

How does the baby exchange substances between the baby and the mother?

• Ovary
• Womb
• umbilical cord
• Fallopian tube