It is a flap in the throat that keeps food out of the trachea when swallowing food.
What Is The Epiglottis?
Your epiglottis is a piece of cartilage at the back of the tongue.
It's the floppy thing in the back of your throat.
When food is swallowed, it is prevented from going into the trachea bya small flat like structure called the epiglottis