How does the human body work? What roles do the digestive, reproductive, and other systems play? Learn about human anatomy and the complex processes that help your body function.➡ Subscribe: http://bit.ly/NatGeoSubscribeAbout National Geographic:National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.Get More National Geographic:Official Site: http://bit.ly/NatGeoOfficialSiteFacebook: http://bit.ly/FBNatGeoTwitter: http://bit.ly/NatGeoTwitterInstagram: http://bit.ly/NatGeoInstaHuman Body 101 | National Geographic https://youtu.be/Ae4MadKPJC0National Geographichttps://www.youtube.com/natgeo