Prenatal Development Flashcards
What is the difference between an Obstetrician, Gynecologist and OB/GYN?
Obstetricians focus on pregnancy and birth. Gynecologists focus on women’s health. OB/GYN can do both practices.
How long is the prenatal period?
40 weeks (9 months)
Stage 1
Fertilzation
Stage 2
Implantation + Germinal Stage
Conception to 2 weeks
Stage 3
Embryonic Stage
2 to 6 Weeks
Stage 4
Fetal Stage
9 weeks to birth
What is the fertilized egg called in stage 1?
Zygote
How long does stage 2 last, and what is happening during this time?
2 weeks, Forms ball of cells called morula. Day 4 becomes a fluid filled cavity forms blastocyst. Attached to wall of uterus.
What role does the hormonal hCG have?
Produces progesterone to maintain pregnancy.
How long does stage 3 last?
2 to 6 weeks
What is the tissue called during stage 3?
Embryo
Why is stage 3 the most critical stage? What is being developed at this time?
Body systems are being developed.
During stage 4, what is the developing tissue called?
Fetus
How long does stage 4 last?
9 weeks to birth
What’s the difference between a genome and an epigenome?
Genome is the blueprint, while epigenome is environmental.
Where is genetic material stored?
Nucelus
How many chromosomes does each person have?
23 pairs
Which chromosome pair determines sex?
23 (XX or XY)
Mom has the dominant gene (B) for brown hair, and dad has the recessive gene (b).
What is their child’s genotype?
What is the phenotype?
Bb
Brown hair
How can the mother’s toxic stress impact a growing child.
Lose ability to grow, sleep problems, or early birth.
What’s the difference between presumptive and positive signs of pregnancy?
Presumptive are Assumptions.
Positive are true.
Name three presumptive signs of pregnancy.
Tired, Naursea, Aches/Pains
Name three positive signs of pregnancy.
HCG production, Ultrasound, Fetal Movement/Heartbeat.
What are the seven major things women need to do during pregnancy to stay healthy?
- Medical Care
- Nutrition and Hydration
- Apprproate Weight Gain
- Physcial Activity
- Hygiene Practices
- Rest
A woman who is already a healthy weight should expect to gain about how much weight during pregnancy?
25-35 pounds
If a baby only weighs 6-8 pounds at birth, where is the rest of the weight gain coming from?
Blood, Fat, Body fluids, breasts, placenta, uterus, and ambiotic fluid.
Bones begin to form and baby is about 1/4 of an inch at the beginning of the month.
Month 2
