This question is most likely just due to a misunderstanding the human body, but how come when my lungs expand, and air rushes in to fill the void, I only feel the suction above my trachea? There’s air at the same pressure below my trachea opening, isn’t there? And there’s gases that are not air inside my stomach, right? Someone set me straight.
In: Biology
You probably know that turning someone upside down doesn’t result in the contents of their stomach just falling out their mouth, right? This is because of the same kind of mechanism that keeps poop just falling straight out your butt; there are sphincters, rings of muscle that close off our digestive tract. There is one such sphincter between the esophagus and stomach that keeps the contents of the stomach, including gasses, from moving up the esophagus. If this leaks a little then the acidic contents of the stomach can irritate the esophagus in something called “acid reflux”.
Latest Answers