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The '''epiglottis''' is a flap of [[cartilage]] that helps to seal off the lower respiratory tract during swallowing so that food and other foreign elements do not enter it.
The '''epiglottis''' is a flap of [[cartilage]] that helps to seal off the lower [[respiratory tract]] during [[swallowing]] so that [[food]] and other foreign elements do not enter it.
== Sources ==
== Sources ==