Labour Flashcards
When does Fertilization occur
12-24 hrs after ovulation
Formation of the blastocyst ( trophoblast and inner cell mass) time
3-5 days after fertilization’s
Implantation time
5-7 days after fertilization
When does the chorion begin to produce hCG
First 3 months of pregnancy
When does gastrulation occur ( the formation of the three germ layers)
Week 1-3
When is the embryonic development period
Week 3-8
When is the beginning of fetal development
Week 9
When is the beginning of the 2nd trimester
Month 4
What happens during the 2nd trimester
The placenta takes over estrogen and progesterone production
When is the beginning of the third trimester
Month 7
What happens during the third trimester
Increased relaxin softens the cervix and loosens ligements
When does lactation occur
After labour
Teratogen
Substances that cause structural abnormality due to exposure during pregnancy
Neurulation
Building of the nervous system
Zygote
A joined ovum and sperm
