The Reproductive System: How Gonads Go - CrashCourse Biology #34
Hank lets us in on the meaning of life, at least from a biological perspective - it's reproduction, which answers the essential question of all organisms: how do I make more of myself? So, sex, how does it work? Crash Course Biology is now available on DVD!
Reproductive System, part 4 - Pregnancy & Development: Crash Course A&P #43
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.
