Conception Flashcards
Implantation occurs how many days after conception
6 days
the blastocyst is completely implanted in the endometrium how many days after fertilization
10-12
how long does the embryonic period last
3 to 8 weeks
Which organs are developing when the woman is expecting her next period
heart and central nervous system
How do we know a menstrual cycle is ovulatory
they are regular every month and some women have PMS
forms the fetal part of the placenta, extra embryonic fetal membrane that is made up of trophoblast and mesoderm
chorion
when does implantation bleeding occur
10-14 days after conception
HCG level of 1000 what stage of development is the embryo/fetus in
gestational sac about 4-5 weeks
an HCG level of 1000 to 7200 yolk sac is visible between what weeks
5 weeks
at 5-7 weeks a fetal pole is visible what would you expect the HCG level to be at this time
7200-10800
When is cardiac activity see on the U/S
at 6 weeks with an HCG greater than 10,800
we should only use ultrasound dating for birth date if the pregnancy is less than how many weeks and only if the u/s and LMP differ by
5 days or more
