Lecture 3A - Embryology Flashcards
morula is how many cells and is the same size as
12-15, zygote
implantation is what day after conception and what day LMP
day 5,
20-23 LMP
3 layers of blastocyst/blastula
trophoblast
ICM/embryoblast
blastocele
what produces hCG for the CL?
trophoblast
what layer of the blastocyst/blastula is the future embryo
ICM/embryoblast
what layer of the blastocyst/blastula is the future primitive yolk sac
blastocele
what does the ICM/embryoblast develop into? (2)
bilaminar embryonic disc
amniotic sac/cavity
what is the bilaminar embryonic disc comprised of (2)
epiblast
hypoblast
primitive ectoderm
epiblast
primitive endoderm
hypoblast
the “endometrium” of pregnancy
decidua
what is the future embryo
blastocyst
what develops into the placenta?
chorion
what provides nutrients to developing fetus
yolk sac
what is gastrulation?
2 layer bilaminar disk develops into 3 layer gastrula (endoderm, mesoderm, ectoderm)