Cell to Fetus
How many chromosomes does each body cell contain?
What is 46
Where does fertilization take place?
What is fallopian tube
Where in the uterus does implantation occur?
What is endometrium?
When is fetal circulation established?
What is at the end of the first trimester or aprx 12 weeks?
Occurs once in every 90 pregnancies
What is twins?
External environment, Drug use and Undernutrition are all what?
Developmental influences
Determines the gender of the fetus
What is the Male?
What forms the embryonic or fetal portion of the placenta?
What is Chorion?
Organ for fetal respiration, nutrition, and excretion
What is the Placenta?
Genetically identical
What are Monozygotic twins?
The division and multiplication of body cells
What is Mitosis
Helps determine if the sperm will make it through the fallopian tubes
What is Estrogen
Maintains an even temperature, prevents the amniotic sac from adhering to the fetal skin, allows symmetrical growth of fetus, allows buoyancy and fetal movement and acts as a cushion to protect the fetus and umbilical cord from injury
What is amniotic fluid?
Detectable in maternal blood as soon as implantation occurs (usually 7-9 days after fertilization)
What is hCG
What are Dizygotic twins?
At fertilization, the new cell contains how many chromosomes?
What is 46
After fertilization, the zygote travels here for implantation
What is the uterus?
Zygote, Embryo and Fetus
What are the three stages of prenataldevelopment
Diverts most fetal blood from the right atrium to the left atrium
What is the Foramen Ovale?
If the embryonic disc does not divide completely this may occur
What is conjoined twins?
What determines individual traits?
What is genes and chromosomes
If the zygote does not move all the way through the fallopian tubes, what can occur?
What is an ectopic or tubal pregnancy?
Age of fetus viability
What is 20 weeks?
Will influence the development of the fetus
What is healthy intake during pregnancy
Each has their own amnion by a common chorion and placenta
What is Monozygotic twins