Growth and Development

1
Growth and Development

• Section 13.3

2
Life Before Birth

• After fertilization, zygote forms.
• Cells divide rapidly forming organs
• Also forms the placenta- an organ that nourishes
  the developing baby inside mother.
• Baby is inside the amniotic sac.
• Amniotic fluid cushions and protects the baby.

3
First 8 weeks

• Baby called an embryo
• Umbilical cord develops- connects new baby to
  placenta
• Contains 3 blood vessels for transport to the
  baby
• Mothers and babys blood never mix
• Scar from umbilical cord is navel or belly
  button

4
8 wks on

• Baby is now called a fetus
• At 12 wks, all organs have been formed
• At 5 mos. Mom can feel baby move
• Delivery occurs at around 9 months

5
Environmental influences

• Expectant moms shouldnt smoke, drink, or do any
  kind of drugs.
• Expectant moms should seek medical care and
  maintain a proper diet.
• Essential nutrients include folic acid, calcium
  and iron

6
Smoking during pregnancy

• Smoking hinders moms ability to absorb O2
• Nicotine and other dangerous substances deprive
  developing child of nutrients
• Some babies are born premature or at a low birth
  weight.

7
Alcohol Use During Pregnancy

• Can cause Fetal Alcohol Syndrome (FAS)
• Can cause mental and physical defects and CNS
  handicaps

8
Drug Use During Pregnancy

• Can cause developing baby to not receive proper
  nutrition.
• Can cause miscarriage, or other dangerous
  conditions.
• Baby can be born addicted to drugs and experience
  learning disabilities