human embryo timing Flashcards
1
Q
fertilization and first cleavage by?
A
first 16-18 hours
2
Q
end of week 1
A
blastula and implantation
3
Q
end of week 2
A
2 layer embryo
4
Q
end of week 3
A
three layer embryo gastrulation/ three germ layers, ecto, meso, endo
5
Q
end week 4
A
heart, gut, kidneys. limbs dev. egins
6
Q
end of week 6
A
limbs completed
7
Q
end week seven
A
skeletal system
8
Q
end of week eight
A
embryo complete
