The Esophagus: Your Food’s Slippery Slide

The esophagus is a muscular tube about 10 inches long connecting throat to stomach.
It moves food using wave-like contractions called peristalsis.
A ring of muscle at the bottom prevents stomach acid from flowing backward.
Swallowing triggers an automatic sequence of muscle movements.
Gravity helps, but the esophagus can push food upward if needed — even while lying down.
You can swallow food or drink upside down thanks to its strong coordination.
The esophagus doesn’t digest food; it’s purely a transport system.
When the lower sphincter weakens, acid reflux or heartburn can occur.
It’s lined with mucus to prevent irritation from friction and acids.
It’s the ultimate food highway — fast, slick, and incredibly precise.