Chapter 4: Prenatal Development & Birth Flashcards
Embryonic Period
Third through the eighth week. Happens after conception, basic forms of all body structures, and internal organs.
Fetal Period
Ninth week until birth. Fetus gains 7 pounds and organs become more mature, more able to function on their own.
Implantation
Process about 10 days after conception. The child burrows into the placenta lining the uterus, where it is protected and nourished.
Embryo
Name of a developing child from third to eighth week of conception.
Fetus
Name of developing child from the ninth week until birth.
Ultrasound
Image of a fetus produced by using high frequency sound waves.
Age of Viability
Age at which a fetus might survive outside of mother’s uterus if proper medical care is valid.
Apgar Scale
Quick assessment of a newborn’s health. All parts of baby are given a score out of 0-2 twice, at 1-5 minutes, and each time all scores is compared to a 10 score.
Cesarean Section (C-Section)
Surgical birth where incisions are made for the fetus to cone through the mother’s abdomen instead of vagina.
Doula
Person trained to support the delivering woman.
Teratogen
Drugs, viruses, pollutants, or stress increasing risk of prenatal abnormalities and birth complications.
Behavioral Teratogens
Conditions that can harm the prenatal brain, affecting child’s intellectual and emotional functions.
Threshold Effect
Where a teratogen is harmless in small doses, but becomes harmful once exposure reaches a certain level.
Fetal Alcohol Syndrome (FAS)
Happening during period of the embryo, a mother’s heavy drinking can cause this.
False Positive
Test that determines if a problem is false and does not exist.