Flashcards in Timings Deck (9)
Period of the egg
Fertilisation to end of 1st week(implantation)
Period of the embryo
Period of the fetus
3rd month to term
Embryo period ends
At the end of the 8th week
When do primordial germ cells form
By the 4th week (in the yolk sac)
How many weeks after conception does the fetal heart and conducting system develop
From 3-6 weeks
When does the morula form?
What is the life span of the corpus luteum?