Unit 1 Flashcards
Highlighted items week 2 (29 cards)
Syncytiotrophoblast secrete
Human chorionic gonadotropin
Presence of hcg forms
Pregnancy tests
Embryoblast differentiates into flat circular disce
Day 8
2 layers of the bilamnar disc
Hypobladt and epiblast
What lies between the primary umbilical vessel and the amniotic cavity
Embryonic disc
Where is most ectopic pregnancy occurring
Uterine tubes
Day 13 and 14 are characterized by the development of the
Primary chorionic Villi
What day does the lacuna form within the syncytiotropoblast?
Day 9
Small cuboidal
Hypoblast
Tall column
Epiblast
Trilaminar embryonic disc forms
Third week of development
Bilaminar to trilaminar
Via gastrulation
3 germ layers
Endoderm mesoderm ectoderm
Invaginating cells which displace a hypolblast
Endoderm
Mesoderm and endoderm separation occurs when in all space accept
Third week, all but anus and mouth
Formation of neural tube
Neuralation
Pairs of somites on days 20 to 30
38 pairs
By week five how many somites are there
42 to 44
Somites give rise to skin and muscles and
Dermis
First system to become functional
Cardiovascular
Major event of week 4
Folding
What folding involves forming the midgut
Lateral folding
Causes heart to move ventrally
Cranial folding
Forgut
Cranial
