the epiglottis
The epiglottis is the small flap of tissue that automatically closes over the windpipe (trachea) when you swallow to prevent food and liquids from entering the airway.
The lid that covers the opening of the windpipe is called the epiglottis. It helps prevent food and liquid from entering the windpipe when we swallow.
When you EAT, you epiglottis covers your larynx. Otherwise nothing covers your larynx when you breathe in.
Windpipe
lungs
Your epiglottis folds down to block the entrance to your windpipe when you swallow food or liquids. This action helps prevent them from entering your respiratory system and instead directs them towards your esophagus for digestion in the stomach.
If you swallow a pill and it accidentally passes into the windpipe, it will undoubtedly feel uncomfortable. You can get the pill out by coughing it up.
The muscle hole that opens into your windpipe is called the epiglottis. It is a flap of cartilage that prevents food and liquid from entering your windpipe when you swallow, instead directing them towards your esophagus.
Because otherwise you might inhale the food or liquid into your windpipe and choke on it.
The food and beverages that go down the food pipe are prevented from entering the wind pipe with the help of epiglottis. When we swallow, the flap of cartilage shuts down automatically, causing it to reach the digestive system.
Generally, but not always the case. Spit you don't swallow is called drool.
A tracheaotomy only affects the windpipe, and they swallow their food just like everybody else.