L2: Clinical Flashcards
Pregnancy Condition, 2 new cavities, gastrulation
Embryo implants within the ___ in a location that can support ___ & ___
body of the uterus; growth and development
Ectopic Pregnancy
if the embryo implants either outside the uterus
Placenta Previa
if the embryo implants in the inferior portion of the uterus
placenta can potentially grow over the opening of the cervix
two layers of the inner cell mass or embryoblast
hypoblast (pink layer)
epiblast (blue layer)
epiblast (blue) layer
high columnar cells adjacent to the amniotic cavity
hypoblast (pink) layer
small cuboidal cells adjacent to the blastocyst cavity
together, the layers form a ___
flat disc
aminoblasts
epiblast cells adjacent to the cytotrophoblast
endometrial stroma adjacent to the implantation site is ___ & ____
edematous & highly vascular
Primitive Yolk Sac
on the side of hypoblast
Amniotic Cavity
on the side of epiblast
will eventually surround the fetus
Gastrulation
process where 2 cell layers become 3 germ cell layers
epiblast and hypoblast undergo this process
appearance of the primitive streak and has a cephalic end of primitive mode
epiblast moves inward (invaginate) forming endoderm and mesoderm; those that do not move become ectoderm
cells rearrange and involves:
migration
invagination
differentiation
Cell Layer: Endoderm
epithelial lining of digestive & respiratory tracts (except oral & anal cavities)
lining of urethra, bladder, & reproductive system
glandular derivatives of digestive tract (liver & pancreas)
Cell Layer: Mesoderm
notochord
msk system
muscular layer of stomach, intestine, etc
circulatory system
