how does the food reaches to the small intestine when we sleep at night just after having dinner, which is against the gravity as the food has to go parallel to the earth surface?
In: Biology
Smooth muscles. They are involuntary so you can’t control or actively feel the contractions, but they are there, working hard 24/7. They move in a function called peristalsis, which is the coordinated contraction of smooth muscles that physically pushes the food through the digestive tract.
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