Prenatal Development

The fertilized egg goes through a process of cell division, it divides into two cells, then four cells, then eight, and continues to divide as it moves from the fallopian tube to the _____________.

• Uterus

• Placenta

• Umbilical Cord

• Ammonitic Fluid / Sac

Once the embryo reaches the blastocyst stage, it begins the process of ______________ into the uterus.

• Uterus

• Placenta

• Umbilical Cord

• Ammonitic Fluid / Sac

• Implantation

Baby is close to 18 inches long and can weigh close to 5 lbs

• 1st Trimester - 1-3 Months

• 2nd Trimester - 4-6 Months

• 3rd Trimester - 7-9 Months

The lungs become mature

• 1st Trimester - 1-3 Months

• 2nd Trimester - 4-6 Months

• 3rd Trimester - 7-9 Months

The _________________________ which cushions the embryo will grow around the implantation site.

• Uterus

• Placenta

• Umbilical Cord

• Ammonitic Fluid / Sac

• Implantation

At this stage, hearing is fully developed. He or she will react to sound, pain, and light and often changes position

• 1st Trimester - 1-3 Months

• 2nd Trimester - 4-6 Months

• 3rd Trimester - 7-9 Months

Baby is fully formed (with all organs and extremities present but still needs to mature), he or she weighs about an ounce and is 4 inches long

• 1st Trimester - 1-3 Months

• 2nd Trimester - 4-6 Months

• 3rd Trimester - 7-9 Months

____________ : provides oxygen and nutrients to the growing baby and removes waste products from baby's blood.

• Uterus

• Placenta

• Umbilical Cord

• Ammonitic Fluid / Sac

• Implantation

Mom may start to feel the baby move.

• 1st Trimester - 1-3 Months

• 2nd Trimester - 4-6 Months

• 3rd Trimester - 7-9 Months

Baby’s heartbeat can be detected with an ultrasound

• 1st Trimester - 1-3 Months

• 2nd Trimester - 4-6 Months

• 3rd Trimester - 7-9 Months