Sphincters - The Fascinating Truth
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...
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*intro music* Let's do a little word association; I say bird, you say nest; I say fire, you say smoke; I say sphincter, you say... butt, right? That's probably why calling somebody a sphincter is basically saying they're a butt. But not all sphincters control the flow of poop. We've got lots of other non-excrement related sphincters throughout our bodies. About fifty different types of sphincters, actually. Yes, they help us not poop our pants or wet ourselves, but they do so much more than that. They're some of the most important unsung heroes of our anatomy. Broadly speaking, a sphincter is a ring-shaped muscle that flexes to open or close a biological opening. They help regulate the entrance, circulation, and exit of fluids, solids, ...
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*intro music* Let's do a little word association; I say bird, you say nest; I say fire, you say smoke; I say sphincter, you say... butt, right? That's probably why calling somebody a sphincter is basically saying they're a butt. But not all sphincters control the flow of poop. We've got lots of other non-excrement related sphincters throughout our bodies. About fifty different types of sphincters, actually. Yes, they help us not poop our pants or wet ourselves, but they do so much more than that. They're some of the most important unsung heroes of our anatomy. Broadly speaking, a sphincter is a ring-shaped muscle that flexes to open or close a biological opening. They help regulate the entrance, circulation, and exit of fluids, solids, ...
