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Why Is Our Skeleton On the Inside?

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ We’re on PATREON! Join the community ►►   / itsokaytobesmart   SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub Having bones is pretty cool. They make our blood, let us hear, and keep us from being just a squishy puddle on the floor. But for every species with bones, there are at least 20 species on Earth with exoskeletons instead. And those exoskeleton animals are incredibly tough and strong. So why don’t WE have our skeletons on the outside? This is the story of bones! References: https://sites.google.com/view/why-our... Special thanks for research assistance: Riley Black Special thanks to our Brain Trust Patrons: AlecZero Amory Silva Amy Sowada Benjamin Teinby Diego Lombeida Dustin Eric Meer George Gladding Jay Stephens Marcus Tuepker Megan K Bradshaw Peter Ehrnstrom vincbis Join us on Patreon!   / itsokaytobesmart   Twitter   / drjoehanson     / okaytobesmart   Instagram   / drjoehanson     / okaytobesmart   Merch https://store.dftba.com/collections/i... Facebook   / itsokaytobesmartpbs