Reproductive System, part 3 - Sex & Fertilization: Crash Course A&P

After weeks of discussion of human reproduction, today we arrive at the main event: THE SEX. Hank explains the four phases of the human sexual response, how a sperm finds and fertilizes an egg, creating a zygote, and how different types of contraception work to prevent that from happening.

Table of Contents
Four Phases of the Human Sexual Response 1:34
Fertilization 3:01
Creating a Zygote 3:21
Methods of Birth Control 7:15