Chapter 4- Prenatel Development Flashcards
The fetus’s growth during pregnancy
Prenatal development
The female cell or egg
The ovum
The organ In a females body that houses the fetus during pregnancy
Uterus
Fertilized egg
Zygote
First two weeks after conception
Zygote
Cells divide. 4 days reaches opening of uterus. Then implantation.
Development that occurs during zygote stage
Attaches(zygote) to thick lining of the uterus
Implantation
Size of zygote
Pinhead
3-8 weeks of pregnancy
Embryo stage
Starts to develop heart,lungs, bones muscles
Embryo stage (part one)
After 27 days conception neural tube closes brain takes over
Embryo stage (part two)
6th week, brain& spinal cord lead to first movements
Embryo stage (part 3)
8-9 week until birth
fetus stage of development during pregnancy
20 baby teeth buds, vocal cords, digestive & kidneys begin to function
Fetus
Baby starts to kick uterus wall in
3-4 month (fetus)
Capable living outside of mom in
7th month (fetus)
Gains weight rapidly to keep warm
Fetus stage
Gains immunity and nutrients
Fetus stage
Suck thumb, yawn, hiccup, sneeze, cough, cry
Fetus stage
Takes fetal position
Fetus
The male cell
Sperm
Heredity
How Characteristics are determined
You get chromosomes from your
Parents
There are __ pairs of chromosomes in each cell
23
Determine the inherited trait
Genes
Who determines the sex of the baby?
The dad
How does the dad determine the sex?
By having a Y chromosome
Mass of cells split into 2. Creating 2 separate masses. (1 egg and 1 sperm)
Identical twins
2 or more eggs and 2 or more sperm. They separate from the start
Fraternal twins
When child is not biologically theirs but legally responsible
Adoption
When sperm is injected into a woman. From donor or biological dad
Artificial insemination
When a woman carries another couples baby who can not become pregnant
Surrogate mother
Miscarriage and still birth
Common prenatal complications
Loss of pregnancy in first 20 weeks
Miscarriage
Loss of pregnancy after 20 weeks
Still birth
Ultra sound, amniocentesis, chorionic villi sampling, alpha feta protein
Common prenatal tests
Don’t drink any amount
Alcohol
Stay away from smoke and second hand smoke
Nicotine
Quit smoking& stay away from it
Marijuana
Don’t do it
Cocaine
Drink little or none at all
Caffeine
Abdominal shields when necessary
X rays
Avoid kitty litter and undercooked meat
Toxoplasmosis
Get mmr vaccine
Rubella