SM59/60_Embryology

Question 1

Week 1 Tings

Answer 1

ovulation (release of maturing egg from an ovarian follicle), conception aka fertilization, and migration down the uterine tube

Question 2

Week 2 Tings

Answer 2

implantation and extraembryonic membrane formation

Question 3

During implantation, the blastocyst (previously morula) sinks into the ___________

Answer 3

upper posterior uterine wall (aka endometrium) (aka decidua)

Question 4

In formation of the blastula and extraembryonic membranes (week 2), what do the chorion, amnion, and yolk sac consist of:

Answer 4

chorion - syntrophoblast, cytotrophoblast, extra-embryonic mesoderm

amnion - ectoderm, extra-embyonic mesodermal coat

yolk sac - endoderm and extra-embryonic mesoderm

Question 5

Yolk sac is the first source of _____

Answer 5

embryonic blood cells

Question 6

Too little amniotic fluid (oligohydramnios) may be a sign of ______

Too much (polyhydramnios) may be a sign of ______

Answer 6

renal agenesis;

inhibition of swallowing/absorption – conditions like anencephaly or tracheoesophageal fistula