A flap of tissue called the epiglottis sits over the top of the trachea. This flap blocks food and drink from going down into the trachea when you swallow hence preventing food from getting into the lungs
an observable fact or event. 2 plural phenomena. a : an object or aspect known through the senses rather than by thought or intuition. b : a temporal or spatiotemporal object of sensory experience as distinguished from a noumenon.
