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9:59
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CrashCourse
Reproductive System, Part 3 - Sex & Fertilization: Crash Course Anatomy & Physiology #42
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 fertilization happens, and how different contraceptive methods work. Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App ...
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