Prenatal Development

Topics: Pregnancy, Childbirth, Embryo Pages: 4 (572 words) Published: July 13, 2013
Prenatal Development
References: Santrock (2009). Child Development Berk (2008). Infants, Children, and Adolescents

Pregnancy Signs and Symptoms
• • • • • • • • • Spotting or Implantation bleeding Delay in menstruation Swollen/tender breasts Fatigue/tiredness Nausea/Morning sickness Backaches and headaches Frequent Urination Darkening of Areolas Food craving or food aversion

The Course of Prenatal Development
• Divided into 3 periods:
The Germinal Period The Embryonic Period The Fetal Period

• The Germinal Period
– Takes place 2 weeks after conception – Includes the:
• creation of fertilized egg, called a zygote, • cell division, • and the attachment of the zygote to the uterine wall.

• The Embryonic Stage
– 2-8 weeks after conception – Cell differentiation, organs begin to appear – Begins when blastocyst attaches to the uterine wall (now called embryo). – Life support systems develop (amniotic sac/amnion, umbilical cord, placenta) – Organogenesis (process of organ formation during the first two months)

• The Fetal Period
– Two months after conception and lasts for seven months – Growth and development continue their dramatic course during this time – 7 months: “age of viability” of the fetus

Trimesters of Prenatal Development
• First Trimester (first three months) • Second Trimester (middle three months) • Third Trimester (last three months)

Hazards to Prenatal Development
• TERATOGENS: any environmental agent that causes damage during the prenatal period. Depends on the: – Dose – Genetic Susceptibility – Time of Exposure to Teratogens

• Key Teratogens
– Prescription and NonPrescription Drugs
• Thalidomide (sedative) • Accutane

– Psychoactive Drugs (Caffeine, Alcohol, Nicotine, Cocaine, Marijuana, Heroin) • Fetal Alcohol Syndrome

Hazards…
• INCOMPATIBLE BLOOD TYPES
– Rh Incompatibility – Mental retardation, miscarriages, infant death

• ENVIRONMENTAL HAZARDS
– Radiation and Pollution – Underdeveloped...

References: Santrock (2009). Child Development Berk (2008). Infants, Children, and Adolescents
Pregnancy Signs and Symptoms
Continue Reading

Please join StudyMode to read the full document

You May Also Find These Documents Helpful

  • Prenatal Development Essay
  • Prenatal Development Research Paper
  • Human Development from Conception to Birth Essay
  • Motor Development Autobiography, describe developmental stages based on real life experiences. Essay
  • prenantal development Essay
  • Prenatal Development Essay
  • Life Span Psychology- Prenatal Development Essay
  • Prenatal Care Essay

Become a StudyMode Member

Sign Up - It's Free