Reproductive System, part 4 - Pregnancy & Development: Crash Course A&P

We've reached the grand finale of our four part series on human reproduction: BABIES! Today Hank walks you through the stages of pregnancy, beginning with how a zygote develops into blastomeres to a morula to a blastocyst and finally to an embryo and a fetus. He also explains some of the amazing anatomical changes that take place in the mother, and the hormonal sequence of events that lead to labor Table of Contents Stages of Pregnancy 1:23 Zygote -- Blastomere 1:34 Morula -- Blastocyst 2:12 Embryo -- Fetus 5:07 Anatomical Changes 5:30 Hormonal Sequences Leading to Labor 7:12