Watch Crash Course Anatomy & Physiology Season 1 Episode 42 Online
- COUNTRIES: United States of America
- Subtitles: English
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.
