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Watch Crash Course Biology Season 2 Episode 46 Online

  • 1.5/10
  • COUNTRIES: United States of America
  • Subtitles: English

If cells and organs never talked to each other, an animal would fall apart faster than a boy band after the popular one goes solo. Thankfully, that’s where the nervous and endocrine systems come in! In this episode of Crash Course Biology, we’ll learn how they use neurons, hormones, and more to keep animals’ bodies coordinated.