SciShow
Sphincters - The Fascinating Truth (2013x190)
Date de diffusion: Déc 10, 2013
Sphincters -- they're not just for butts! Hank explains the fascinating truth about these magic rings of muscle, where they appear in the human body and the pretty fantastic functions they perform in the animal kingdom.
- Première: Jan 2012
- Épisodes: 3680
- Abonnés: 2