2. once fertilization occurs, no other sperm can...
Answer
enter the egg (usually)
3. Fertilized egg
Answer
zygote
4. Solid ball of cells
Answer
morula
5. at day 4, the fertilized egg is...
Answer
separating into a fluid-filled cavity and a cellular mass. fertilized egg is now called a blastocyst
6. implantation of blastocyst into endometrium occurs...
Answer
7-10 days after conception
7. implantation bleeding due to erosion of...
Answer
endometrial blood vessels
, 8. trophoblastic cells of blastocyst secrete enzymes which allows...
Answer
blastocyst to burrow into the endometrium
9. decidua
Answer
what the endometrium is called after implantation
10. chorionic villi
Answer
develop from the trophoblast, grow into blood-filled spaces of decidua
11. chorionic villi become the...
Answer
placenta
12. fxn of chorionic villi
Answer
they are vascular, they obtain nutrients and oxygen from the maternal blood stream, they also
dispose of embryonic/fetal waste and CO2
13. there is a one-cell thick membrane separating...
Answer
maternal and fetal blood and allows passage of molecules btwn the 2
14. conception occurs...
Answer
2 weeks after the LMP
15. the post-conception age (fetal age) is...
Answer
2 weeks less than gestation age (bc ovulation starts mid-cycle at 14 days which is 2 wks)
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