5), With Complete Solution.
Before the 1900s mosy babies were born where?
Home
Why were most babies born at home before the 1900s?
Hospitals had a bed rep, not clean, high infant mortality, not enough nurses
WIC
Women, Infant, and Children which provides supplemental food and education for
women and families
FMLA
Family medical leave act, which allows 12 weeks unpaid leave without losing job or
benefits
When do postpartum mothers go home after delivery?
Vaginal - 48 hour stay
C section - 4 day stay
How long is pregnancy?
40 weeks or 280 days based on first day of last menstrual cycle
Pregnancy divided into 3 sections of 3 months each— called what?
Trimesters
First human cell is created by uniting of what 2 things?
Sperm and ovum (sperm can live up to 5 days and can fertilize ovum up to 24 hours
after ovulation)
Human cells are made of how many chromosomes?
pairs
The 23rd pair of chromosomes are called what and do what?
Gametes or "sex cells" and they determine sex of baby
Female chromosomes
XX
Male chromosomes
XY
Mitosis?
Makes up and develops the organs and tissues of the body. The cells divide and
duplicate
Meiosis?
Pass on the DNA of parent to child
Fertilization
Or conception. When sperm penetrates egg. Normally occurs in outer 3rd of Fallopian
tube within 5 mins of intercourse
Zygote
After sperm and egg unite, it is called zygote
Fertilization window of opportunity
For conception to occur is 5 days before ovulation and 1 day after ovulation, bc sperm
lives up to 5 days and ovum are vulnerable to fertilizing 18-24 hours after ovulation
, Implantation is what
When the zygote moves down to uterus
Morula
After 3 days of cell division, the zygote is now a morula. This floats freely in uterine
cavity for 2-4 more days
Blastocysts
Inner layer Cavity created by morula
Implantation
Implantation, or Nidation, occurs 5-6 days after conception
Zygote implants to walls of uterus
Trophoblast
Outer layer cavity created by morula
Endometrium (uterine lining) is called
Decidua
3 stages of human development are
1. Pre embryonic
2. Embryonic
3. Fetal
Pre embryonic stage
Conception/fertilization - 2 weeks
Includes fertilization, cellular reproduction (mitosis and meiosis) and implantation
Cell differentiation
After implantation, cells differentiate and develop special functions
- chorion- outer
- amnion - inner
- yolk sac - becomes the baby
- germ layers - primary
Chorion
"Outside" outer membrane of amniotic sac
Develops from truplablast and envelops amnion, embryo, and yolk sac
Has villi finger like projections which form into embryonic portion of placenta
Amnion
"Inside"
Inner membrane of amniotic sac
2nd membrane which forms boundaries of amniotic cavity
Grows as the fetus grows
Chorion and amnion together form
Amniotic sac and amniotic fluid
Amniotic Fluid
30ml at 10 weeks
350ml at 20 weeks
800-1000ml at 37 weeks
Decreases after 37 weeks due to hormones
Filtered and replaced every 3 hours by fetal breathing/ movement and through fetal
kidneys